NUMBUZIN NO.5 VITAMIN CONCENTRATED SERUM 30ML

Values You Can Trust: Halal-Friendly* / Vegan-Friendly* / Cruelty-Free* / 100% Authentic Guarantee

*Self-assessed by Adilsons based on available ingredient data (no ethanol/denat.; no haram or animal-derived ingredients detected). / *Brand-stated; not certified by an independent body.

Dealing with stubborn dark spots, post-acne marks, or sun damage that won't fade can be frustrating. This concentrated serum is designed as an intensive treatment to target various forms of hyperpigmentation, helping to restore a clear and even-toned complexion, even in the sunny climate of Mauritius.

• Primary Target: Stubborn hyperpigmentation, including sun spots, post-inflammatory hyperpigmentation (PIH), and uneven skin tone.
• Key Benefits: Brightens the overall complexion, visibly fades dark spots, provides antioxidant protection, and soothes the skin.
• Texture & Finish: A lightweight, refreshing serum that absorbs quickly without a sticky or greasy residue.

1) Cleanser — Wash your face with a gentle cleanser.

2) Numbuzin No.5 Serum — Apply 2-3 drops to your entire face, focusing on areas with dark spots.

3) Sunscreen (AM) / Moisturiser (PM) — Always protect your skin with SPF 30+ in the morning to prevent new spots. Use a moisturiser at night to lock in hydration.

Note: Already own a brightening serum? Finish that first to avoid waste (substitute, don’t stack).

Using this serum in the morning helps protect your skin from environmental damage that can cause dark spots.

• Minimalist (3 steps): 1) Cleanser → 2) Numbuzin No.5 Serum → 3) Sunscreen SPF 30+
• Optional: Add a lightweight, hydrating moisturiser before your sunscreen if your skin feels dry or your SPF isn't hydrating enough for the Mauritian climate.
• Wait times: Allow the serum to absorb for 30-60 seconds before applying your next step. Wait 1-2 minutes after your moisturiser before applying sunscreen.

Your skin repairs itself at night, making it an ideal time for this intensive brightening treatment.

• Minimalist (3 steps): 1) Cleanser (Double-cleanse if wearing makeup or water-resistant sunscreen) → 2) Numbuzin No.5 Serum → 3) Moisturiser
• Optional: If you use a separate hydrating toner, apply it before the serum. If you use a chemical exfoliant (AHA/BHA), use it on alternate nights to this serum to avoid potential irritation.
• Texture rule: Always apply products from the thinnest to the thickest consistency.

Daily Use — AM and/or PM

• Amount: 2-3 drops are sufficient for the entire face.
• Apply to: A clean, dry face and neck. Gently pat into the skin, concentrating on areas with hyperpigmentation.
• Frequency: Start with once daily (either AM or PM) to see how your skin tolerates it. If well-tolerated after a week, you can increase to twice daily for more intensive results.

If-This / Then-That

• If you have very sensitive skin: Start by using it every other day for the first week. Patch test behind your ear or on your jawline before first use.
• If you use other strong actives (like Retinol or high % AHAs/BHAs): Use this serum in the morning and your other active at night, or use them on alternate nights. Avoid layering them in the same routine to prevent irritation.
• If your skin feels sticky: You might be using too much product. Reduce the amount to 1-2 drops.

Safety

Avoid applying to broken or irritated skin. Discontinue use if a rash or persistent irritation occurs. For teens, focus on a basic routine of cleanser, moisturiser, and SPF; introduce potent serums like this only if needed for specific concerns like post-acne marks, and always with diligent sun protection.

This serum is designed for daily use to achieve the best results in fading dark spots.

• Daily: Use in your AM and/or PM routine as tolerated.
• If you use a separate exfoliant (AHA/BHA):
  • Mon: Numbuzin No.5 Serum (AM/PM)
  • Tue: Exfoliant (PM only), Numbuzin No.5 Serum (AM only)
  • Wed: Numbuzin No.5 Serum (AM/PM)
  • Thu: Exfoliant (PM only), Numbuzin No.5 Serum (AM only)
  • Fri/Sat/Sun: Numbuzin No.5 Serum (AM/PM)
• Rule: Consistency is more important than intensity. Daily use of this serum combined with daily sunscreen will yield better results than sporadic use of harsh treatments.

• Immediate: Skin feels hydrated and appears more radiant and plump upon application.
• 2–4 Weeks: With consistent daily use and diligent sun protection, you may notice an improvement in overall skin brightness and a subtle lightening of newer, less stubborn dark spots. Brand-stated data suggests visible improvement in skin evenness within this timeframe.
• 4–8+ Weeks: More significant and visible reduction in hyperpigmentation, including older sun spots and post-acne marks. Skin tone appears more even and clear.

*Brand claim—no public dataset available for independent verification.

Why use this, not lemon juice? Many DIY remedies suggest using lemon juice to fade dark spots. While it contains Vitamin C, it's highly acidic and unstable, which can cause chemical burns, irritation, and even worsen hyperpigmentation when exposed to the sun (phytophotodermatitis). This serum uses a concentrated, stable blend of proven brightening ingredients like Glutathione, Niacinamide, and Vitamin C derivatives that work effectively without the risks of raw citrus juice.

• ✅ Works Well With: Sunscreen (essential for protecting results), Hyaluronic Acid, Centella Asiatica, Snail Mucin, Ceramides, and most moisturisers.
• ⚠️ Use with Caution: While it can be used in a routine with other actives, avoid applying it in the very same step as high-strength Retinoids or exfoliating acids (AHAs/BHAs) to prevent potential irritation, especially if you have sensitive skin. It's safer to alternate them between your AM and PM routines.
• ❌ Avoid On: Broken or freshly irritated skin.

• Oily & Combination Skin: Excellent. Its lightweight texture absorbs well without adding greasiness.
• Normal Skin: Excellent. Helps maintain an even tone and provides antioxidant benefits.
• Dry Skin: Good. Provides hydration but should be followed with a nourishing moisturiser to lock in benefits.
• Sensitive Skin: Use with caution. The formula is potent. A patch test is highly recommended, and start with use every other day.

• Post-Inflammatory Hyperpigmentation (PIH) - dark marks left after acne
• Sun Spots & Freckles
• Uneven Skin Tone
• Dullness & Lack of Radiance
• Melasma (as a supportive cosmetic treatment alongside professional advice)

• Official Korean Name: 넘버즈인 5번 글루타치온C 흔적세럼 (Romanized: Numbuzin 5beon Glutathione C Heunjeok Serum)
• Version: Note that this product has undergone reformulation. The current version may differ slightly from older reviews.
• Shelf Life: 30 months from date of manufacture.
• Period After Opening (PAO): 12 months.
• Date Marks: Korean packaging typically shows the manufacturing date (제조) or expiration date (까지).
• Country of Manufacture: South Korea.

• Halal Status: Halal-Friendly*. This product does not have an official Halal certification. Our assessment is based on a review of the publicly available ingredient list. It is formulated without ethanol/denatured alcohol and does not appear to contain any prohibited animal-derived ingredients.
• Vegan Status: Vegan-Friendly*. This product is not officially certified as vegan. The ingredient list appears to be free from animal-derived components like honey, snail mucin, or animal collagen.
• Animal Testing Policy: Cruelty-Free*. The brand Numbuzin states that it is cruelty-free, but it is not certified by an independent organization like Leaping Bunny or PETA. The brand's policy regarding sales in Mainland China is not explicitly detailed, which can sometimes involve post-market testing.

*Self-assessed by Adilsons based on available ingredient data (no ethanol/denat.; no haram animal-derived ingredients detected). / *Self-assessed by Adilsons based on available ingredient data (no animal-derived ingredients detected). / *Brand-stated; not certified by an independent body.

• MFDS Class: Functional Cosmetic (Brightening). This product is classified by the South Korean Ministry of Food and Drug Safety (formerly KFDA) as a functional cosmetic for its brightening effects.
• Functional Ingredients: Niacinamide, Ascorbic Acid, Ascorbyl Glucoside, 3-O-Ethyl Ascorbic Acid.
• Clinical Evidence: The brand claims the product improves inner skin melanin by 23.72% and skin evenness by 18.90%. This is based on brand-conducted tests, and the full study protocol and dataset are not publicly available for independent review.
• Brightening Nuance: In the context of MFDS classification, "Brightening" refers to improving skin radiance and evening out skin tone by addressing issues like sun spots and post-acne marks. It does not change or lighten your natural skin color.
• Medical Disclaimer: This is a cosmetic product intended to improve the appearance of the skin. It is not a medical treatment and is not intended to diagnose, treat, cure, or prevent any disease.

*Brand claim—no public dataset available for independent verification.

Key Actives Explained

• Glutathione: A powerful antioxidant that helps to even out skin tone and reduce oxidative stress that contributes to dark spots.
• Niacinamide (5%): A form of Vitamin B3 that is a superstar for brightening, regulating oil production, and strengthening the skin's barrier.
• Tranexamic Acid (4%): Highly effective at targeting hyperpigmentation, particularly melasma and sun spots, by interrupting the pathways that create excess melanin.
• Vitamin C Complex (Ascorbic Acid & derivatives): A blend of pure and stable forms of Vitamin C to provide potent antioxidant protection, brighten the skin, and support collagen.
• Alpha-Arbutin & Bisabolol: Work to further inhibit melanin production and soothe the skin, reducing the appearance of dark spots and preventing irritation.

Full INCI List

Vaccinium Vitis-Idaea Fruit Extract (60.4%), Butylene Glycol, Niacinamide (5%), Panthenol (5%), Tranexamic Acid (4%), Water, 1,2-Hexanediol, Neopentyl Glycol Dicaprate, Caprylic/Capric Triglyceride, Sorbitol, Bifida Ferment Lysate, Chondrus Crispus Extract, Butyrospermum Parkii (Shea) Butter, Saccharum Officinarum (Sugarcane) Extract, Alpha-Arbutin, Sodium Hyaluronate, Melia Azadirachta Flower Extract, Ocimum Sanctum Leaf Extract, Melia Azadirachta Leaf Extract, Curcuma Longa (Turmeric) Root Extract, Corallina Officinalis Extract, Tremella Fuciformis (Mushroom) Extract, Pentylene Glycol, Glycerin, 3-O-Ethyl Ascorbic Acid (2,000ppm), Bisabolol, Tromethamine, Ethylhexylglycerin, Adenosine, Hydrogenated Lecithin, Allantoin, Glutathione (100ppm), Ceramide NP, Beta-Glucan, Dipotassium Glycyrrhizate, Tocopherol, Ascorbic Acid, Ascorbyl Glucoside, Tocopheryl Acetate, Hydroxypropyl Cyclodextrin, Ubiquinone, Thioctic Acid, Potassium Hydroxide, Behenyl Alcohol, Carbomer, Xanthan Gum, Disodium EDTA.

Note: The brand may reformulate products. Always refer to the packaging for the most current ingredient list.

• Fragrance Status: Fragrance-free. Does not contain added artificial fragrances.
• Scent Profile: The product has a minimal, neutral scent from its ingredients.
• EU Allergens: None declared by the brand based on the ingredient list.

Who Should Use With Caution

• Highly Sensitive Skin: This is a concentrated serum with multiple active ingredients. If your skin is very reactive, introduce it slowly (e.g., 2-3 times per week) before moving to daily use.
• Pregnancy/Breastfeeding: While the ingredients are generally considered safe for topical use, it's always best to consult with your doctor before introducing new active skincare products during pregnancy or while breastfeeding.

Patch Test Protocol

Before using for the first time, apply a pea-sized amount to a small, discreet area of skin, like behind your ear or on your inner jawline. Wait 24-48 hours. If you experience any redness, itching, or irritation, do not use the product. If you have a history of sensitivity, you may re-check the area at 72 hours.

• Texture: A lightweight, slightly viscous gel-serum that spreads easily across the skin.
• Finish: Absorbs quickly to a natural, hydrated finish without feeling sticky, tacky, or greasy.
• Scent: Minimal to no detectable scent.
• pH: Not publicly disclosed by the brand.
• Fungal Acne (Malassezia) Compatibility: Contains some ingredients like Shea Butter and Hydrogenated Lecithin which could potentially be triggers for those with fungal acne. Patch testing on an affected area is advised. Individual responses vary.

• Issue: Mild tingling or redness upon application.
  Fix: This can be normal for potent vitamin serums. Try applying it over a hydrating toner to buffer the skin, or reduce use to every other day until your skin adjusts. If irritation persists, discontinue use.
• Issue: Product feels a bit sticky or pills under makeup.
  Fix: You are likely using too much. A little goes a long way. Reduce the amount to 1-2 drops for your entire face and allow it to fully absorb before applying your next product.
• Issue: I'm not seeing results after a few weeks.
  Fix: Fading hyperpigmentation takes time and consistency. Ensure you are using the serum every day and, most importantly, applying a broad-spectrum sunscreen of SPF 30 or higher every single morning. Without sun protection, you are unlikely to see significant improvement as UV exposure creates new pigment.

This serum's lightweight, non-greasy texture makes it exceptionally well-suited for the hot and humid climate of Mauritius.

• Humid Summers: It provides potent treatment without feeling heavy or sticky. Oily and combination skin types may find it provides enough light hydration to be used under sunscreen without a separate moisturiser in the morning.
• Drier Winters/AC Environments: The serum helps combat dullness that can come with drier air. Layer a good moisturiser over it to ensure your skin stays hydrated and comfortable.
• Sun Exposure: As a potent tool against sun-induced pigmentation, it's an excellent addition to any Mauritian skincare routine, but its effects are entirely dependent on being paired with daily, consistent use of high-SPF sunscreen.

At Adilsons, we guarantee 100% authenticity. All our products, including this Numbuzin serum, are sourced directly from the brand or their authorized distributors in South Korea. Your product should arrive sealed, with clear batch and expiration dates on the packaging. The box and bottle will feature a mix of Korean and English text. If you have any doubts about your product's authenticity, please contact us on WhatsApp at +230 5 778 2336 with your order number and photos of the product.

• Size: 30ml
• Estimated Uses: A 30ml bottle contains approximately 600 drops.
• At 1x/day (3 drops): The bottle will last for approximately 200 days (over 6 months).
• At 2x/day (3 drops each time): The bottle will last for approximately 100 days (over 3 months).
• Reorder Cadence: Depending on your usage, you should plan to reorder every 3 to 6 months.

Starter Essentials (AM Brightening & Protection)

• ROUND LAB 1025 DOKDO CLEANSER 150ML — A gentle, pH-balanced cleanser that cleans without stripping, creating the perfect base.
• NUMBUZIN NO.5 VITAMIN CONCENTRATED SERUM — Your primary treatment to target dark spots and even out skin tone.
• Beauty of Joseon RELIEF SUN : RICE + PROBIOTICS 50ML — Essential daily protection to prevent new spots and protect your results.

Targeted Results (PM Repair & Hydration)

• Anua Heartleaf 77% Soothing Toner 250ml — Calms and lightly hydrates the skin, preparing it for the serum.
• NUMBUZIN NO.5 VITAMIN CONCENTRATED SERUM — The core treatment step to work on pigmentation overnight.
• SKIN1004 MADAGASCAR CENTELLA SOOTHING CREAM 75ML — A lightweight, calming moisturiser to lock in the serum and support the skin barrier.

Compatibility note: Avoid using strong acids (AHA/BHA) and strong retinoids on the same night as this serum if you have sensitive skin.

This serum is an excellent choice if your primary concerns are stubborn dark spots, post-acne marks, and achieving an overall brighter, more even complexion.

Consider these alternatives from our catalog if:

• Your main concern is soothing and calming redness: SKIN1004 MADAGASCAR CENTELLA AMPOULE 55ML — Choose this if you need to calm irritation and reduce sensitivity. Why: It contains 100% Centella Asiatica extract to powerfully soothe and repair the skin barrier, making it ideal for reactive skin.
• You want a different brightening approach with a glowy finish: AXIS-Y DARK SPOT CORRECTING GLOW SERUM CORRECTS & BRIGHTENS 50ML — Choose this if you have combination or oily skin and want a hydrating, glow-boosting serum. Why: It features Niacinamide and plant-derived Squalane to brighten and moisturise with a lightweight, dewy finish.
• You need a potent treatment for both acne and dark marks: Anua NIACINAMIDE 10%+TXA 4% SERUM 30ML — Choose this for a high-strength, targeted attack on both breakouts and stubborn pigmentation. Why: It combines a higher concentration of Niacinamide with Tranexamic Acid for intensive, focused results on acne marks and melasma.

Mindful-use: If you already have a comparable brightening product at home, finish it first to avoid waste and get a fair read on its results before switching.

• Format: 30ml glass bottle with a pump applicator for hygienic and precise dispensing.
• Stability: The opaque bottle and pump system help protect the potent vitamin ingredients from light and air exposure, maintaining their efficacy.
• Recycling (Mauritius): The glass bottle is recyclable. Please rinse it out and dispose of it in your glass recycling bin. The plastic pump and cap should be disposed of in your regular trash.
• Storage: To preserve the potency of the active ingredients, store the serum in a cool, dark place away from direct sunlight and heat, such as a cabinet or drawer. Refrigeration is not required but can be pleasant.

Aggregated sentiment from verified purchasers and community forums. Note that experiences are individual and results may vary.

• "I've tried everything and what made the most difference was numbuzin's vitamin concentrated serum. I have reallllyyyy bad PIH and nothing seemed to be doing anything... but i saw a diff with num in like 2 weeks." — Reddit, r/AsianBeauty (2024-06)
• "The serum is lightweight, absorbs quickly, very hydrating and doesn't strip the skin. And above all else it works and how. I am in my second bottle and the results are amazing. Even the stubborn sun spots have lightened so so much, a feat even high end vitamin c couldn't achieve." — Nykaa customer review (2024-07)
• Fair Caveat: "Unfortunately this one broke me out... got small red bumps all over my face and texture on my forehead." — Reddit, r/AsianBeauty (2024-06). This highlights that while many see great results, this potent formula may not be suitable for all skin types, and patch testing is important.

Numbuzin is a Korean skincare brand built on the philosophy of providing personalized, easy-to-understand solutions for specific skin concerns. Their slogan, "What's Your Number?", reflects their unique approach of numbering their products to correspond to a particular skin issue. Instead of confusing product names, you simply choose the number that matches your need. Numbuzin combines high-quality, effective ingredients with a straightforward, customer-centric approach to help you find your perfect skincare answer.

• Glutathione: A master antioxidant naturally found in the body that helps to brighten the skin and fight oxidative damage.
• Niacinamide: A form of Vitamin B3 that brightens skin, refines the appearance of pores, and strengthens the skin's natural barrier.
• Tranexamic Acid: An active ingredient that is highly effective in treating hyperpigmentation, including melasma and sun spots, by interrupting the process that creates excess pigment.
• PIH (Post-Inflammatory Hyperpigmentation): The dark marks or spots left on the skin after a pimple or other skin inflammation has healed.
• MFDS: Ministry of Food and Drug Safety in South Korea, the regulatory body that classifies certain cosmetics with specific benefits (like brightening or wrinkle-improvement) as "Functional Cosmetics."
• PAO (Period After Opening): The symbol on cosmetics (an open jar with a number like "12M") that indicates how many months the product will remain stable and effective after it has been opened.

Adilsons
WhatsApp: +230 5 778 2336
Email: info@adilsons.mu

At Adilsons, we are committed to bringing you the best of authentic Korean beauty. We carefully curate our selection, ensuring every product is 100% genuine and sourced directly from brands and their authorized distributors in South Korea. We believe in empowering you with truthful, evidence-based information to help you make mindful choices for your skin.

Is this a Vitamin C serum?

It's more than that. While it does contain Vitamin C and its derivatives, its power comes from a concentrated blend of multiple brightening ingredients, including Glutathione, 5% Niacinamide, and 4% Tranexamic Acid. This multi-pathway approach is often more effective for stubborn pigmentation than Vitamin C alone.

Will this make my skin lighter?

No. This serum is designed to address hyperpigmentation, meaning it helps to fade dark spots and even out your skin tone to restore your natural, clear complexion. It will not bleach or change your inherent skin color.

Can I use this if I have active acne?

Yes, it can be very helpful for the dark marks that acne leaves behind (PIH). The formula also contains soothing ingredients. However, it is not an active acne treatment. If you have active breakouts, pair this with a gentle, acne-focused routine.

Why did it tingle when I first applied it?

A slight tingling sensation can be normal when introducing a potent serum with a high concentration of active ingredients. This should subside as your skin adjusts. If the sensation is painful or accompanied by persistent redness, stop using the product.

Best For:

Individuals looking for an intensive, targeted treatment to visibly reduce stubborn dark spots, post-acne marks, and overall uneven skin tone.

Key Benefits:

• Potent multi-ingredient formula targets pigmentation from several angles.
• Lightweight texture is suitable for all skin types, including oily skin in humid climates.
• Helps to brighten and restore a radiant, even complexion.

Keep in Mind:

• The high concentration of actives may be too strong for very sensitive or reactive skin. A patch test is essential.
• Results are entirely dependent on consistent use and diligent daily application of sunscreen.

• Coverage: Island-wide delivery (Mauritius).
• Processing & Timing: Orders process in 1–2 business days. Delivery typically takes 1–5 business days after pickup by our partners.
• Liquids/Sensitive Items: This serum is available for door-to-door delivery or pickup only.
• Pickup: Available at Citadelle Mall.
• Returns: No change-of-mind exchanges on opened skincare items.
• Refunds (Summary): Applicable for defective/damaged items on receipt (report within 48h), wrong item, or manufacturing defects within 6 months.

Source of Truth: This is a quick snapshot. For full details, please refer to our official policy pages.

• Refunds & Returns: https://adilsons.mu/policies/refund-policy
• Shipping: https://adilsons.mu/policies/shipping-policy