REJURAN Dual Effect Ampoule 50ml

Values: 100% Genuine (Adilsons policy) · Fragrance-Free (confirmed via INCI — no Parfum/Fragrance listed) · Wudu-Compatible (see the Wudu and Prayer Compatibility section below).

If barrier weakness, sagging texture, or dull, uneven tone have you feeling like your skin "gave up" overnight rather than aged gradually, this ampoule's job is to rebuild the physical scaffolding (lipids, elasticity signalling) rather than mask the surface.

PIH vs PIE: Niacinamide and Arbutin here target PIH — brown/tan marks from excess melanin, the kind left behind by old acne or sun spots. Neither ingredient meaningfully treats PIE (red/pink marks from damaged capillaries) — that needs Centella or time, not brightening actives.

Pros: Genuinely dual-function (barrier support + brightening in one step); fragrance-free; lightweight, fast-absorbing texture that layers well; daily-use friendly with no cycling required. Caveats: Not fungal-acne-safe (see Sec 30B); not suitable in pregnancy/nursing (see Safety Notice); not vegan (fish-derived DNA); full clinical evidence is strongest for the injectable/medical use of PDRN, weaker for this specific topical SKU.

In Mauritius heat, the shine you feel by midday is sebum and sweat doing their job, not dirt — washing more than twice daily strips the skin's acid mantle (target pH 4.5-5.5), which triggers compensatory sebum overproduction, the exact oiliness you were trying to fix.

This ampoule doesn't cleanse anything, but it's part of the repair side of that cycle: Ceramide NP and the cholesterol/squalane/oleic-acid lipid blend in its formula are there to rebuild the lipid layer that over-washing (or over-exfoliating) strips away, while c-PDRN is marketed for supporting the skin's own regenerative signalling rather than sitting on top as an occlusive film.

Classification: YELLOW (14+ with guidance). This isn't a harsh exfoliant, retinoid, or BPO product, so it isn't a hard RED — but it carries real clinical-style actives (PDRN, Niacinamide, Arbutin at undisclosed but active concentrations) aimed at firmness, elasticity, and pigment correction, concerns that don't meaningfully apply to prepubescent or early-teen skin, which hasn't yet lost collagen density or accumulated years of sun-driven pigmentation.

For teens under 16 without a specific pigmentation or barrier concern, a plain ceramide/hyaluronic-acid moisturizer does the same job without spending money on regenerative-signalling actives their skin doesn't yet need.

Compatibility checklist: Bedside-compatible (no sink needed) — yes. Requires rinsing — no. Requires precise dosage — no, 3-5 drops by eye is fine. Applicable with unwashed hands — acceptable in a pinch, though hands should be clean when possible. Requires wait time — a short 30-60 second absorption pause only. Can it be a single-product routine — yes, in a genuine pinch (ampoule + nothing else still delivers hydration and the PDRN/ceramide payload, though you lose the SPF layer critical for AM use).

On a burnout night, this qualifies for a bare-bones 2-3 product routine: rinse (or micellar wipe if even that's too much), this ampoule, and a barrier moisturizer. The texture is milky and light, not tacky, so it doesn't fight against low-motivation application the way a thick balm can.

Step 1 — When: AM and/or PM, after cleansing and toning.

Step 2 — How much: 3-5 drops (roughly a coin-size puddle in the palm) for face and neck.

Step 3 — How: Warm between fingertips, press (don't rub) onto damp skin, wait 30-60 seconds before your next step.

Introduce this as the ONLY new product in your routine. Wait a full 14 days before adding anything else. This isolation window ensures you can identify whether any reaction is caused by this specific product.

1. Gentle cleanser (optional, if skin feels oily on waking) → 2. Hydrating toner (optional layer) → 3. REJURAN Dual Effect Ampoule (3-5 drops, press in, wait 30-60s) → 4. Moisturizer → 5. Sunscreen SPF50+ PA++++ (mandatory).

Mauritius humidity note: the Sodium Hyaluronate in this formula draws water from the humid morning air rather than from deeper skin layers, so it tends to perform well without feeling heavy in AM use.

This product has no photosensitizing actives, so no AM restriction applies — but SPF is still mandatory afterward, both as general daily protection and because Niacinamide/Arbutin-driven brightening only holds if new sun-triggered pigmentation isn't being added at the same time.

1. Double cleanse (if wearing SPF/makeup) → 2. Toner → 3. REJURAN Dual Effect Ampoule (bolded anchor step, 3-5 drops, press in, wait 30-60s) → 4. Moisturizer → 5. Optional occlusive seal if AC-heavy or very dry.

This product doesn't occupy a retinoid, acid, or Vitamin C "active lane," so it doesn't need placement in a 4-night skin-cycling schedule — it's safe to use nightly alongside whatever active lane you're running, applied before that active if you want the barrier-support layer underneath, or after if your main goal that night is the brightening/regenerative effect closer to skin.

Technique: Pat/press, do not rub — friction degrades the formula and increases irritation risk, especially with a fragile fragment-based active like PDRN.

Required skin state: Slightly damp works best — it helps the Sodium Hyaluronate and glycerin draw in water rather than sitting on dry, tight skin.

Wait time: 30-60 seconds before the next step is enough; this isn't a pH-dependent acid that needs a long window to work.

Hands deliver 100% of product. Cotton pads absorb approximately 30-40%. Use hands for this one — a cotton pad will waste a meaningful share of an ampoule this concentrated.

This is an encyclopedia map of all product types. You do not use all of these daily. You select modules based on your skin state.

Global execution rules: viscosity ladder thinnest to thickest, water-phase before oil-phase, treatments before seals. Wait-time defaults: watery layers 10-20s, serum layers 30-60s, before sunscreen 10-15 minutes if going outdoors. Amount defaults: watery toner/essence 5-8 drops per layer; serum/ampoule 2-3 drops or 1 pump (+1 drop for neck); eye product ½ rice-grain per eye; gel moisturizer 1-1.5 peas, cream 1-2 peas; occlusive seal rice-grain to pea-size; sunscreen 2-finger rule for face, +1 finger for neck. Hydrators go on slightly damp skin; retinoids on fully dry skin; exfoliating acids on dry or lightly damp, one lane only. If the routine pills, stings, or feels heavy, reduce layers, not increase.

AM Maximum Stack: 1. Rinse/gentle cleanse (optional) — oily waking skin only. 2. pH-prep toner (optional). 3. Hydrating toner layers (1-3, optional). 4. Essence (optional — choose toner layering OR essence, not both, if you pill easily). 5. Mist (optional micro-step). 6. Booster/soothing serum (optional). 7. Antioxidant lane (optional, choose ONE — LAA Vitamin C or a gentler antioxidant). 8. Pigment support lane (optional, choose ONE — this ampoule's Niacinamide/Arbutin can serve this role). 9. Hydration serum lane (optional — HA/polyglutamic acid). 10. Oil-control lane (optional). 11. Peptide/growth-factor/repair lane (optional — this ampoule sits here, given its PDRN regenerative-signalling role). 12. Eye product (optional). 13. Moisturizer. 14. Optional sealing layer (AC/dry only). 15. Sunscreen SPF50+ PA++++ (non-negotiable). 16. Lip SPF (optional). In AM, prioritize comfort + SPF adherence over stacking; in high humidity, fewer layers often perform better.

PM Maximum Stack: 1. Micellar pre-cleanse (optional). 2. Oil cleanser/balm (if SPF/makeup). 3. Water cleanser. 4. pH-prep toner (optional). 5. Hydrating toner layers (optional). 6. Essence (optional). 7. Soothing/barrier serum (optional). 8. [Anchor: REJURAN Dual Effect Ampoule] — bold placement, 3-5 drops, wait 30-60s. 9. Targeted serum (optional, only if non-conflicting — this product has no hard active-lane conflicts). 10. Moisturizer. 11. Sleeping mask (optional, dry/barrier nights). 12. Occlusive seal (optional, avoid if fungal-acne-prone given this ampoule's own oleic acid/lecithin content). 13. Spot treatment (as needed). 14. Lip sleeping mask (optional). Do not layer retinoids with AHA/BHA in the same night; keep "one lane" per night.

Tier: Light fluid / milky serum — apply after watery toners and essences, before creams and oils.

Layering rule: thinnest to thickest, water-phase before oil-phase — this ampoule sits mid-ladder: after hydrating toners, before your moisturizer.

Phase compatibility: water-phase emulsion carrying a lipid complex (squalane, cholesterol, oleic acid, hydrogenated lecithin) — layers cleanly under a cream moisturizer without pilling in most routines, but reduce competing humectant layers underneath it if you notice any balling.

Prerequisites: Before starting this product, your routine should already include a gentle cleanser and a daily SPF habit. Without consistent SPF, brightening gains from Niacinamide/Arbutin are undermined by new sun-driven pigmentation.

Fitzpatrick context: for Fitzpatrick IV-VI skin, Arbutin-driven brightening carries a small PIH-rebound risk if irritation occurs (post-inflammatory darkening can follow any irritation on deeper skin tones) — patch test and pair with consistent SPF.

Barrier weakness / loss of elasticity: Ceramide NP restocks the intercellular lipid matrix; PDRN is marketed for supporting the skin's own regenerative signalling pathways (best independently evidenced in the injectable/medical literature, weaker for this topical SKU specifically).

Uneven tone (PIH): Niacinamide inhibits melanosome transfer from melanocytes to keratinocytes; Arbutin inhibits tyrosinase, the enzyme that produces melanin. Neither treats PIE (red/pink post-inflammatory marks).

Secondary benefits: Adenosine (a recognized Korean anti-wrinkle functional ingredient, concentration undisclosed here) and antioxidant support from Tocopheryl Acetate (Vitamin E).

What this product cannot do:

• Cannot physically lift sagging skin the way an injectable or device-based treatment can.
• Cannot lighten your natural skin tone — brightening means fading excess pigment, not changing your natural complexion.
• Cannot substitute for daily SPF in preventing new pigmentation.

Barrier moisturizer (seal in the ceramide/PDRN payload): Primary — Dr.Althea 147 Barrier Cream 50ml (AM/PM, apply after this ampoule; real five-type ceramide complex — Ceramide NP, AS, AP, NS, NG). Alternatives — THE FACE SHOP Rice & Ceramide Moisturizing Cream 50ml, SKIN1004 Madagascar Centella Probio-Cica Enrich Cream 50ml, Anua Birch Moisture Boosting Cream 50ml.

Sunscreen (protect the brightening gains): Primary — Beauty of Joseon Relief Sun: Rice + Probiotics 50ml (AM only). Alternatives — SKIN1004 Hyalu-Cica Water-Fit Sun Serum 50ml, Anua Heartleaf Silky Moisture SunCream, SKIN1004 Tone Brightening Tone-Up Sunscreen.

Gentle cleanser (protect the barrier this ampoule is rebuilding): Primary — ROUND LAB 1025 Dokdo Cleanser 150ml (AM/PM). Alternatives — Beauty of Joseon Green Plum Refreshing Cleanser 100ml, VT Reedle Shot Cleanser 80ml, ROUND LAB Birch Juice Moisturizing Cleanser 150ml.

Pilling pairs: heavy silicone-forward primers applied immediately after this ampoule without a moisturizer buffer in between can pill against its lipid complex — wait a full minute and use a light moisturizer as a buffer layer.

Chronic stress elevates cortisol, which breaks down collagen, increases transepidermal water loss (TEWL), and compromises barrier function — the same territory this ampoule's Ceramide NP and lipid complex are built to support.

On high-stress weeks, prioritize the barrier-repair side of this product (apply under a slightly richer moisturizer) over chasing faster brightening results — a stressed, under-barriered face won't hold pigment-correcting actives as well anyway.

Assessment: Water-Permeable (wudu-compatible). This is a light, water-based ampoule, not a film-forming or occlusive product — it absorbs into skin rather than sitting on top as a barrier to water contact.

Adilsons provides this assessment based on the product's physical properties. Rulings on wudu validity vary between scholars. Consult your own trusted Islamic authority.

MYTH: "This is the same as an injectable Rejuran Healer treatment." REALITY: This topical ampoule shares the PDRN active family with REJURAN's clinic-administered injectables, but topical application does not reach the dermal depth an injection does — the evidence base for the injectable is far more extensive than for this specific cosmetic SKU.

MYTH: "Salmon DNA in skincare means it's a live biological product." REALITY: The Hydrolyzed DNA here is a purified, non-living, fragmented ingredient — it carries no living cells, viral, or genetic-modification risk to the user.

MYTH: "More drops means faster results." REALITY: Overuse doesn't accelerate epidermal turnover, which runs on its own 28-60 day biological clock — it just increases irritation and product waste.

AC environment warning: in air-conditioned rooms, the Sodium Hyaluronate in this formula can draw moisture from your deeper skin layers instead of from the air — always seal it with a moisturizer when spending extended hours in AC.

Sugar cane burning season (July-November): PM2.5 increases during this period; since this ampoule is fast-absorbing rather than tacky, it doesn't meaningfully worsen particulate adhesion, so no AM/PM shift is needed on that basis alone.

Hard water note: Mauritius tap water hardness varies by region; if you notice tightness after cleansing before this step, that's calcium-stearate residue, not this ampoule — a pH-adjusting toner beforehand helps.

*Evidence for c-PDRN/n-PDRN and Adenosine's anti-wrinkle effect is strongest in clinical/injectable and MFDS-functional-concentration contexts respectively; this product's own concentrations for Adenosine are not publicly disclosed, so treat the anti-wrinkle claim as brand-stated rather than independently confirmed at this specific dose.

Full INCI list (aggregated from third-party ingredient-decoder listings — the primary brand source page was not independently fetchable in this research session, so treat the exact order as approximate, not verified against the printed carton): Water, Glycerin, PEG-6, Rubus Fruticosus (Blackberry) Leaf Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Calendula Officinalis (Pot Marigold) Flower Extract, Aloe Barbadensis (Aloe Vera) Leaf Juice, Vaccinium Angustifolium (Blueberry) Fruit Extract, Morus Nigra (Black Mulberry) Fruit Extract, Sodium Hyaluronate, Dipropylene Glycol, Butylene Glycol, Niacinamide, 1,2-Hexanediol, Carbomer, Squalane, [--- Estimated 1% Line ---] Hydrolyzed DNA, Xanthan Gum, Hydrogenated Lecithin, Caprylyl Glycol, Pentylene Glycol, Polysorbate 20, Ethylhexylglycerin, Hexylene Glycol, Ceramide NP, Adenosine, Oleic Acid, Trehalose, Urea, Inulin Lauryl Carbamate, Tocopheryl Acetate, Bisabolol, Arbutin, Cholesterol, Serine, Glyceryl Polyacrylate, Algin, Pullulan, Disodium Phosphate, Potassium Phosphate.

*The placement of the 1% line above is an estimate for a formula of this type, not a brand-confirmed cutoff — Hydrolyzed DNA and other named actives below it may sit at genuinely active concentrations despite the position; this is a transparency estimate, not a "fairy dusting" accusation.

Preservative system: 1,2-Hexanediol, Caprylyl Glycol, Pentylene Glycol, Ethylhexylglycerin, and Hexylene Glycol — a multi-glycol preservative-booster system, no parabens or formaldehyde-releasers found in the declared list.

Fragrance status: Fragrance-Free — no Parfum/Fragrance listed in the researched INCI.

Scent: No added fragrance disclosed; some PDRN/protein-derivative ampoules carry a faint natural biological scent from the hydrolyzed-DNA fraction — not confirmed one way or the other for this exact SKU.

EU 26 allergen screen: None of the 26 EU-regulated fragrance allergens detected in the declared INCI researched for this product.

Alcohol disclosure: Alcohol-Free — no denatured or drying alcohol found in the researched ingredient list.

Ragweed/plant allergy → Calendula (Calendula Officinalis Flower Extract): if you have a known ragweed, chrysanthemum, or related Asteraceae-family plant allergy, Calendula carries a documented cross-reactivity risk — patch test before full-face use.

Halal: *Not formally certified. Self-assessed by Adilsons based on available INCI data: the hero active (Hydrolyzed DNA) is derived from salmon, a fish source generally considered halal-permissible under most fiqh rulings (unlike porcine-derived ingredients), but this is not the same as a formal Halal certificate, and Muslims with stricter requirements or specific concerns about fish-DNA processing should consult their own scholars.

Vegan: No. The hero active, Hydrolyzed DNA (c-PDRN/n-PDRN), is genuinely animal-derived (salmon), so this product cannot be marketed as vegan regardless of any other formulation choices.

Cruelty-free: *Brand-stated policy on some retailer listings; not independently certified by Leaping Bunny, PETA, or an equivalent third-party audit in the research done for this listing.

Microplastic-Free: Yes — no microplastic-forming polymers (e.g. polyethylene, acrylates copolymer film-formers) identified in the researched INCI.

MFDS classification: Not confirmed as a Functional Cosmetic for this SKU. "Functional" in Korea means the product underwent additional government testing for a specific claim (wrinkle improvement, whitening, etc.) at a defined ingredient concentration — Adenosine (present) is a real MFDS-recognized wrinkle ingredient, but its concentration here isn't published, so this product should be treated as a General Cosmetic until the brand discloses that data.

Whitening translation: the Korean "미백" (mibaek) classification, where it applies, means regulation of melanin production — fading dark spots to reveal your natural tone. It does NOT bleach skin or change your natural complexion.

Clinical evidence: PDRN/PN technology has a genuine, independently published clinical and in-vivo literature base for its injectable dermatological use (PharmaResearch's core platform, developed from 2009 onward); however, no product-specific clinical trial for this topical ampoule SKU was found published in this research pass.

Evidence confidence: Medium for the underlying PDRN mechanism generally, Marketing-Only* for several of this specific product's stated benefits (pore refinement, sebum balancing) where no study was found.

*Marketing-Only: no independently published study data was found supporting these specific claims for this exact product at the time of writing.

Fungal Acne Safety: FA-Unsafe. Oleic Acid (a C18 free fatty acid documented to induce rapid Malassezia growth in lab studies), Hydrogenated Lecithin, and Polysorbate 20 are all present — those managing fungal acne should patch test carefully or skip this product.

Assessment: Low. This is a fast-absorbing, water-based ampoule with a lipid component, but it isn't a heavy film-former.

Pilling risk rises if layered directly under a heavy silicone-based primer or too many other humectant layers underneath it without absorption time in between.

Mitigation: apply to damp skin, wait the full 30-60 seconds, pat rather than rub, and reduce the number of layers underneath it if you notice balling.

Color baseline: expect a light, milky-white appearance; a yellowed or separated look is a sign of oxidation or spoilage, not normal variation.

Storage: keep out of direct sun and away from bathroom humidity/heat where possible — Mauritius bathroom storage accelerates degradation of protein/DNA-fragment actives faster than a bedroom shelf or drawer would.

Spoilage signs: off/sour smell, separation that won't remix on shaking, or a texture change from milky-smooth to grainy. When in doubt, discard.

Patch test: apply to the inner forearm, wait 24 hours; if clear, test behind the ear for another 24 hours; then begin facial use.

If adverse reaction: STOP ALL ACTIVES. For 72 hours, use ONLY gentle cleanser + plain moisturizer + mineral SPF. NO acids, retinoids, Vitamin C, exfoliants, or essential oils. After 72h, reintroduce ONE product per 14 days.

Emergency stop signals: hives, swelling, blistering, persistent burning, or breathing difficulty — seek emergency care immediately.

Pregnancy alternatives: since this product is not recommended in pregnancy/nursing (see Safety Notice above), a plain ceramide-based barrier cream without PDRN or arbutin — such as the Dr.Althea 147 Barrier Cream — covers the barrier-support side safely; always confirm any substitute with your OB-GYN.

1. Skipping SPF the next morning — undoes the brightening work from Niacinamide/Arbutin.
2. Rubbing it in vigorously instead of pressing — degrades the fragile PDRN fraction and increases irritation.
3. Using it as a spot treatment at higher concentration than the face dose — no evidence this speeds results.
4. Assuming it's a substitute for the injectable Rejuran Healer treatment — it's a different, milder delivery format.
5. Ignoring the fungal-acne-unsafe ingredients if you're FA-reactive, because the brand markets it as "gentle."

Overuse threshold: using more than the recommended 3-5 drops twice daily does not speed epidermal turnover — it increases irritation risk and wastes product.

Usage math: at 3-5 drops per application, a 50ml bottle holds roughly 250-350 applications at typical dropper-drop volumes.

Lifespan: used once daily (PM only), that's roughly 8-11 months; used twice daily (AM+PM), roughly 4-5.5 months. Overdosing at 2-3x the recommended amount cuts this proportionally without producing faster results.

Reorder timing: plan to reorder about 2 weeks before you expect to run out, to allow for shipping time.

This ampoule does one real job well — rebuild barrier lipids while fading PIH — and the routine around it should protect that work, not compete with it.

AM: 1. Gentle cleanser (optional) → 2. Toner (optional) → 3. REJURAN Dual Effect Ampoule (3-5 drops, press, wait 30-60s) → 4. Moisturizer → 5. Sunscreen SPF50+ PA++++ (mandatory). PM: 1. Double cleanse (if wearing SPF/makeup) → 2. Toner → 3. REJURAN Dual Effect Ampoule (anchor step) → 4. Moisturizer.

If your barrier is currently compromised (stinging on moisturizer, visible flaking): pause any acids/retinoids, keep this ampoule plus a barrier moisturizer only, for 3-7 days before resuming actives.

If you're spending long hours in AC: seal this ampoule with a richer moisturizer than usual — the AC will otherwise pull the humectants' moisture back out of your skin.

If you're fungal-acne-prone: patch test first given the Oleic Acid/Hydrogenated Lecithin/Polysorbate 20 content, or consider a different barrier-support product entirely.

Stock-true bundle: REJURAN Dual Effect Ampoule + ROUND LAB 1025 Dokdo Cleanser + Dr.Althea 147 Barrier Cream + Beauty of Joseon Relief Sun — a complete barrier-repair-and-brighten routine, cleanser to protect the barrier this ampoule is rebuilding, cream to seal it, SPF to protect the brightening gains.

After purchasing, you will receive our skincare education email series covering this product in depth.

The recommendations above are based on formulation synergy with REJURAN Dual Effect Ampoule, not on margin or stock levels. If a pairing does not exist in our catalog, we say so. If you already own a product that fills the same role, use what you have first.

If you want the PDRN regenerative mechanism without the brightening actives (and without the arbutin-driven pregnancy caution), REJURAN's own Turnover Ampoule 30ml is a simpler, PDRN-focused barrier ampoule at the same 0.5% c-PDRN concentration, without Arbutin — this is the closest like-for-like alternative. Three further alternatives: REJURAN's own Triple Radiance Ampoule 30ml if your primary goal is radiance/glow rather than firmness; Dr. Reju-All REJUALL Advanced PDRN Rejuvenating Cream 20g, a different brand's PDRN-based cream format if you'd rather the regenerative active in a cream than an ampoule; or Dr.Althea 147 Barrier Cream 50ml if you want ceramide-based barrier repair with no PDRN and no arbutin at all (the safest pregnancy-adjacent-household option, though always confirm any substitute with your own doctor if pregnant).

Thesis: Choose the Dual Effect Ampoule over the Turnover Ampoule 30ml if you need combined barrier repair AND pigment correction in one step, not barrier support alone.

IF/THEN triggers: If your main concern is dullness/uneven tone alongside barrier weakness, THEN this Dual Effect formula is the better fit. If you're pregnant, nursing, or specifically want to avoid arbutin, THEN the Turnover Ampoule 30ml is the safer pick. If your barrier is currently compromised (stinging, flaking), THEN neither — repair barrier first with a plain ceramide moisturizer before adding either ampoule.

Timing: both work AM/PM; this Dual Effect version pulls double duty so it doesn't need a separate brightening step layered on top, simplifying an already-full routine.

Don't upgrade if: you're pregnant/nursing; you're new to actives and want the simplest possible PDRN introduction first; you're fungal-acne-reactive and haven't patch tested the lipid complex yet.

If you match 2 or more upgrade triggers above, THIS is worth choosing. If not, the Turnover Ampoule alternative is sufficient and, for pregnancy/nursing specifically, safer. Consistency beats complexity.

Within Adilsons' own REJURAN lineup, a reasonable strength/complexity ladder runs: Turnover Ampoule 30ml (PDRN-only, simplest introduction) → Triple Radiance Ampoule 30ml (radiance-focused) → Dual Effect Ampoule 50ml (combined barrier + brightening, most comprehensive). This is a catalog-based grouping by function, not an official brand-published ladder.

This product's PRIMARY function is: barrier lipid support + PIH brightening via PDRN/Ceramide NP/Niacinamide/Arbutin. You do NOT need this if you already own a product with the same PDRN-plus-brightening combination. Finish your current product before purchasing.

Check whether you have an open product with Niacinamide or Arbutin as its main active — REJURAN's own PAO isn't publicly disclosed for this SKU, but buying a duplicate while an existing one is still usable is waste regardless.

Stacking assessment: Significant Benefit if paired with a plain barrier moisturizer or sunscreen (different pathway). No Benefit if stacked with another PDRN or high-Niacinamide/Arbutin serum (same mechanism, redundant).

This product is sourced through authorized Korean distributors — primarily Craver Co., Ltd (South Korea), alongside other verified distribution partners. Craver is a major Korean beauty distributor and the parent company of SKIN1004, handling authorized distribution for multiple K-beauty brands. All products are shipped directly to Mauritius via verified channels.

For comprehensive information about how we verify authenticity, our layered verification system, and how to check your product at home, visit our dedicated Authenticity and Trust page.

Quick verification tips: check that the batch/lot code and expiry date are legible and consistent between the outer carton and the bottle; genuine units typically carry crisp, high-contrast printing rather than blurry text or mismatched fonts. If your unit looks materially different from what's described here, contact us via WhatsApp before use.

Brand Name: REJURAN. Parent Company: PharmaResearch Co., Ltd. (KOSDAQ: 214450). Founded: PharmaResearch was established in 1993 as Korea's first pharmaceutical consulting firm, headquartered in Gangneung-si, South Korea.

Hero Technology: PDRN/PN (polydeoxyribonucleotide/polynucleotide), a purified salmon-DNA-derived regenerative ingredient, first developed for tissue-regenerative use by PharmaResearch in 2009 — the first company in Korea to do so.

REJURAN's flagship injectable "skin booster" line launched in 2014 and built the brand's core reputation in clinics across Asia; the topical/cosmetic ampoule line (including this Dual Effect Ampoule) brings that same PDRN technology into an at-home format, though the independently published clinical evidence base remains strongest for the clinic-administered injectable use. The brand is now sold in 50+ countries, with active expansion into Southeast Asia, the Middle East, Brazil, and the EU. PharmaResearch is the only publicly listed company built around the polynucleotide skin-booster category — there is no separate Rejuran stock ticker.

Honest gap: individually-attributed customer reviews (a named platform, a skin type, a direct quote) for this exact SKU were not independently verifiable in this research session — WebFetch access to Reddit, Amazon, YesStyle, and independent review sites was not used to pull full pages in this pass, so no peer customer quotes are presented here rather than inventing plausible-sounding ones.

What real, named editorial and retailer sources do consistently describe: a lightweight, fast-absorbing, milky texture that layers well under other products (Stylevana Editor's Review; YesStyle product page copy), and reports of gradual, non-irritating results — visible hydration/smoothness improvements around week one, with firmness and brightness improvements typically described around weeks two to four (Stylevana; retailer/editorial sources covering the related Turnover Ampoule Dual Effect line). Treat these as retailer/editorial sources, not independent peer reviews, until individually-attributed customer feedback can be verified.

Sustainability: check local recycling guidance for glass/dropper components; this product is not marketed as refillable.

How do I use the REJURAN Dual Effect Ampoule? Apply 3-5 drops to clean fingertips after cleansing and toning, press onto face and neck, and follow with a moisturizer (and SPF in the AM).

What's the difference between this and the REJURAN Turnover Ampoule? This Dual Effect formula combines c-PDRN + n-PDRN with Ceramide NP, Niacinamide, and Arbutin for both barrier repair and brightening; the Turnover Ampoule is a simpler, PDRN-focused barrier product without the brightening actives.

Is this safe to use during pregnancy? No — see the Safety Notice at the top of this page; general PDRN and arbutin pregnancy-safety guidance advises against using either during pregnancy and nursing.

Is it fungal-acne safe? No — Oleic Acid, Hydrogenated Lecithin, and Polysorbate 20 in the formula are documented Malassezia-feeding or FA-conditional ingredients.

How can I tell if my Rejuran product is authentic? Check for a legible, consistent batch/lot code between carton and bottle, crisp printing, and any hologram/QR/NFC authentication feature; see the Sourcing and Authenticity section above for Adilsons' own verification process.

PDRN

Polydeoxyribonucleotide — a purified, fragmented DNA-derived ingredient (here, salmon-derived) used for its regenerative-signalling properties.

c-PDRN / n-PDRN

REJURAN's own naming for two PDRN fraction types combined in this "Dual Effect" formula.

Ceramide NP

A lipid that helps rebuild the skin's natural barrier structure.

Arbutin

A plant-derived or synthetic ingredient that inhibits tyrosinase, the enzyme responsible for producing melanin (pigment).

Niacinamide

Vitamin B3; supports barrier function and reduces the transfer of pigment-producing melanosomes to skin cells.

PIH

Post-inflammatory hyperpigmentation — brown/tan marks left after acne or irritation, caused by excess melanin.

PIE

Post-inflammatory erythema — red/pink marks from damaged capillaries, not treated by brightening actives.

MFDS

Korea's Ministry of Food and Drug Safety, which classifies cosmetics as "Functional" only after specific ingredient-concentration testing.

Fungal Acne (Malassezia) Safe

Free of the fatty-acid types that feed the yeast responsible for fungal-acne-type breakouts.

Every product sold by Adilsons Beauty is 100% genuine, sourced through authorized Korean distribution channels. Full details on our verification system: Authenticity and Trust.

Our team is available to help you build a routine, troubleshoot reactions, and answer ingredient questions. WhatsApp: +230 5 778 2336.

For in-depth skincare education, visit our blog at adilsons.mu/blogs/k-beauty or subscribe to our email to get our guided education series delivered to your inbox.

Coverage: Island-wide delivery (Mauritius).

Processing and Timing: Orders process in 1-2 business days; usually ready by Day 3 for pickup by our delivery partners/regional team. Partner collection can take up to 1 week. After pickup, delivery typically takes 1-5 business days (weekdays only).

Express: May be available by region; request on WhatsApp: +230 5 778 2336.

Liquids/Sensitive Items: Serums, toners, liquid makeup (and kits containing liquids) are pickup or door-to-door only; checkout enforces this.

Scheduling: Deliveries run by region on set schedules; we will contact you the evening before.

Pickup: Citadelle Mall pickup available.

Returns: No change-of-mind exchanges.

Refunds (Summary): For defective/damaged on receipt (report within 48h), wrong item, or manufacturing defect within 6 months. Refunds via bank transfer (7-10 business days); card refunds may incur a 5% processor fee (fee not charged for defects/order errors). Opened skincare/personal-care items are non-returnable (except if damaged on delivery).

Source of Truth: This is a quick snapshot. If anything differs, the policy pages are final.

Store Policies: For the most up-to-date information, please review our Shipping Policy and Refund Policy.

Best for: adults 16+ with barrier weakness and uneven tone (PIH) who want both concerns addressed in a single lightweight step, and who aren't pregnant/nursing or fish-allergic.

Key benefits: genuinely dual-function formula (Ceramide NP barrier support + Niacinamide/Arbutin brightening); fragrance-free; fast-absorbing, humidity-friendly texture; no active-lane scheduling required, so it fits any routine without conflict.

Keep in mind: not fungal-acne-safe; not suitable in pregnancy/nursing; not vegan; the strongest clinical evidence behind PDRN exists for the injectable format, not this specific topical SKU.

Assessment: Consult Oncologist. This product is fragrance-free and retinoid-free, which are both good signs for treatment-sensitized skin, but its hero active is an atypical, less-studied ingredient class (fish-derived DNA fragments) for this population, and Arbutin's tyrosinase-inhibiting mechanism hasn't been specifically evaluated for oncology-treatment interactions in the research done for this listing.

Consult your oncology care team before introducing any new skincare products during treatment.

Antioxidant pollution defense: Tocopheryl Acetate (Vitamin E) provides mild antioxidant support against free-radical damage; this isn't a heavily antioxidant-forward formula, so don't rely on it as a primary pollution-defense product.

AC/humidity swing interaction: the Sodium Hyaluronate in this formula helps in genuinely humid outdoor air but can pull moisture from deeper skin layers during long AC exposure — seal with a moisturizer on AC-heavy days (see the Climate Fit section above for the full explanation).