NUMBUZIN NO.5 GOODBYE BLEMISH SERUM 50ML

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 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.

Dealing with the stubborn dark marks that pimples leave behind can be frustrating. This powerful serum is designed for those who want to fade post-inflammatory hyperpigmentation (PIH), even out skin tone, and achieve a clearer, more radiant complexion without harshness.

• Texture: A lightweight, watery gel that absorbs quickly.
• Finish: Leaves a hydrated, subtle glow without feeling sticky or greasy.
• Best For: All skin types, especially those concerned with acne scars, dark spots, and dullness.
• Key Actives: Tranexamic Acid, Niacinamide, Vitamin C derivatives, Glutathione.

1. Cleanser: Wash your face to create a clean base.
2. This Serum: Apply 2-3 drops to your face and gently pat it in.
3. Sunscreen (AM) / Moisturiser (PM): Always seal in the serum and protect your skin. Fading dark spots requires daily sun protection.

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

Minimalist (4 steps):

1. Gentle Cleanser: Start with a clean canvas.
2. Hydrating Toner (Optional): Adds a layer of moisture and helps the serum absorb.
3. Numbuzin No.5 Serum: Apply 2-3 drops to target pigmentation and boost antioxidant protection.
4. Sunscreen (SPF 30+): This is a non-negotiable step. Sun exposure will darken spots and undo the serum's work.

Wait Times: Allow the serum to absorb for 30-60 seconds before applying sunscreen to prevent pilling.

Minimalist (3-4 steps):

1. Double Cleanse: Use an oil cleanser to melt sunscreen/makeup, followed by a water-based cleanser.
2. Numbuzin No.5 Serum: Apply 2-3 drops to work on blemishes and skin repair overnight.
3. Moisturiser: Lock in the serum and support your skin barrier.

Optional: If you use a retinoid for acne or anti-aging, you can alternate nights with this serum to avoid potential irritation. (e.g., Night A: Retinoid, Night B: Numbuzin No.5 Serum).

• Amount: 2–3 drops (or 1 pump) is sufficient for the entire face.
• Frequency: Start once daily (either AM or PM) to see how your skin adjusts. If well-tolerated after a week, you can increase to twice daily.
• Method: Apply to a cleansed and toned face. Gently pat into the skin until absorbed. You can apply an extra drop directly onto stubborn dark spots.
• Wait Time: Allow 30-60 seconds for it to absorb before your next step (moisturiser or sunscreen).

If-This / Then-That:

• If you have very sensitive skin: Start by using it every other day at night for the first week.
• If you use other strong actives (like Retinoids or AHAs/BHAs): Alternate nights to prevent over-exfoliation and irritation. Don’t layer them in the same routine.
• If your skin feels tight after use: Ensure you are applying it on slightly damp skin (from your toner) and sealing it with a good moisturiser.

Safety: Avoid use on broken or irritated skin. Stop if a burning rash occurs. While gentle, it's a concentrated serum; patch testing is always recommended for beginners.

This serum is gentle enough for most to use daily. Here’s how to fit it into a routine with other actives.

Example Week (PM focus):

• Mon: Numbuzin No.5 Serum
• Tue: Exfoliant (AHA/BHA) Night
• Wed: Numbuzin No.5 Serum
• Thu: Retinoid Night
• Fri: Numbuzin No.5 Serum
• Sat: Soothing/Hydrating Night (no strong actives)
• Sun: Numbuzin No.5 Serum

Rules: One strong active per night. Do not use retinoids and strong acids on the same night. This serum can be used in the AM every day, even on nights you use other actives.

Mauritius Note: In our humid climate, this lightweight serum is perfect for both AM and PM use. Your AM moisturiser can be replaced by a hydrating sunscreen if your skin feels oily.

• Immediate: Skin feels hydrated, plump, and has a subtle glow. The lightweight texture absorbs without stickiness.
• 2–4 Weeks: Some users report a brighter overall complexion and faster fading of new, fresh acne marks. Skin may feel smoother. Initial purging (small bumps) is possible for some due to Niacinamide and Tranexamic Acid but should subside.
• 4–8+ Weeks: With consistent use and daily sun protection, a visible reduction in older dark spots, sun spots, and overall pigmentation. The brand’s clinical test noted a 9.65% reduction in dark spots and an 18.90% improvement in skin tone evenness after 4 weeks.

• Instead of using lemon juice on dark spots: Use this serum. Lemon juice is highly acidic and can cause chemical burns and severe sun sensitivity (phytophotodermatitis), often making pigmentation worse. This serum uses stable, scientifically-proven Vitamin C derivatives and other brighteners that work without damaging your skin barrier.
• Instead of harsh physical scrubs for dull skin: Use this serum. Aggressive scrubbing can create micro-tears and inflammation, leading to more dark spots (PIH). This serum brightens by targeting melanin production and promoting a healthy barrier, revealing a glow from within.

• Works Well With:
  • Hyaluronic Acid, Panthenol, Beta-Glucan: These hydrating and soothing ingredients cushion the actives in this serum, boosting hydration and comfort.
  • Ceramides & Snail Mucin: Excellent for pairing at the moisturiser step to support the skin barrier, which is crucial when treating hyperpigmentation.
  • Sunscreen: An essential partner. This serum’s antioxidant properties boost your sunscreen's effectiveness, and sunscreen prevents new spots from forming.
• Use with Caution (Alternate Use):
  • High-Strength Retinoids (Tretinoin, Retinal): To avoid potential irritation, use this serum in the morning and your retinoid at night, or on alternate evenings.
  • High-Strength AHAs/BHAs (e.g., Glycolic Acid >7%, Salicylic Acid >2%): Similar to retinoids, alternate use to prevent over-exfoliation and a compromised skin barrier.

• Oily & Combination Skin: Excellent. Its lightweight, non-sticky texture provides hydration without adding greasiness. The 5% Niacinamide also helps regulate sebum production over time.
• Dry Skin: Very good. Provides a potent brightening treatment. Ensure you follow with a nourishing moisturiser to lock in hydration and support the skin barrier.
• Acne-Prone Skin: Highly suitable. It targets the post-inflammatory hyperpigmentation (PIH) left by breakouts and is formulated to be gentle and non-comedogenic for most users.
• Sensitive Skin: Generally well-tolerated, as it's formulated with soothing ingredients like 5% Panthenol. However, it is a concentrated serum with multiple actives. A patch test is strongly advised.

Note on Fungal Acne (Malassezia Folliculitis): This formula contains Shea Butter and Hydrogenated Lecithin, which can be potential triggers for some. If you are prone to fungal acne, please patch test carefully on an affected area before full-face application. Individual responses vary.

• Post-Inflammatory Hyperpigmentation (PIH) from acne
• Dark spots, sun spots, and freckles
• Uneven and dull skin tone
• General lack of radiance or "glow"
• Redness and blotchiness from past irritation

• Official Korean Name: 넘버즈인 5번 글루타치온C 흔적세럼 (Numbuzin No. 5 Glutathione C Heunjeok Serum)
• Version Note: This is the renewed "No.5+" formula, also known as the "Glutathione Vitamin Concentrated Serum". It features an updated, more potent ingredient list compared to the original "Goodbye Blemish Serum".
• Country of Manufacture: South Korea
• Shelf Life: 36 months from manufacture date.
• Period After Opening (PAO): 12 months. However, due to vitamin content, it's best used within 6 months for maximum potency.
• Date Markings: Dates are printed in YYYY.MM.DD format. Look for "제조" (manufacture) or "까지" (use-by).

• Halal Status: Halal-Friendly*. This product is self-assessed by Adilsons. Based on a review of its INCI list, it does not contain ethanol (denatured alcohol) or any animal-derived ingredients forbidden in Islam. It contains only fatty alcohols (Behenyl Alcohol) which are permissible.
• Vegan Status: Vegan-Friendly*. Self-assessed by Adilsons. The formula does not appear to contain any animal-derived ingredients like snail mucin, honey, or animal-based collagen.
• Animal Testing Policy: Cruelty-Free*. The brand Numbuzin states that it is cruelty-free. However, it is not currently certified by a major independent body like Leaping Bunny or PETA.
• Mainland China Retail: Its retail status in mainland China is unconfirmed. Sales in mainland China may be subject to post-market testing in certain cases; the brand's specific policy applies.

*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: Dual-Functional Cosmetic for Brightening & Wrinkle-improving.
• Functional Ingredients: Niacinamide (Brightening), Adenosine (Wrinkle-improving).
• Clinical Evidence (Brand-Published): A 4-week clinical study showed an 18.90% improvement in skin tone evenness and a 9.65% reduction in the appearance of dark spots. Hypoallergenic and skin irritation tests were completed.
• Brightening Nuance: "Brightening" in this context refers to improving radiance and fading dark spots or PIH; it does not change your natural skin color.

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

Medical Disclaimer: This is a cosmetic product, not a medical treatment. For persistent or severe skin conditions, please consult a qualified dermatologist.

Key Actives Explained:

• Vaccinium Vitis-Idaea Fruit Extract (60.4%): Lingonberry extract, a powerful antioxidant that helps protect skin from environmental damage and brightens the complexion.
• Niacinamide (5%): A form of Vitamin B3 that is a superstar for brightening, controlling sebum, minimizing pores, and strengthening the skin barrier.
• Panthenol (5%): Pro-vitamin B5, an excellent humectant that also soothes and repairs the skin barrier, reducing sensitivity.
• Tranexamic Acid (4%): Highly effective at targeting hyperpigmentation, particularly melasma and post-acne marks, by inhibiting melanin production pathways.
• Glutathione & Vitamin C Complex: A blend of powerful antioxidants including pure Vitamin C derivatives (Ascorbyl Glucoside, 3-O-Ethyl Ascorbic Acid), Alpha-Arbutin, and Glutathione that work synergistically to fade dark spots and even out skin tone.

Full INCI List:

Vaccinium Vitis-Idaea Fruit Extract, Butylene Glycol, Niacinamide, Panthenol, Tranexamic Acid, 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, Bisabolol, Tromethamine, Ethylhexylglycerin, Adenosine, Hydrogenated Lecithin, Allantoin, Glutathione, 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.

• Preservative System: 1,2-Hexanediol, Ethylhexylglycerin.
• Formulated Without: Drying alcohols, artificial fragrance, essential oils, mineral oil.

• Fragrance Status: Fragrance-Free. This product does not contain any added artificial fragrances or essential oils.
• Scent: It has a very faint, neutral scent from its raw ingredients, which dissipates quickly upon application. (Intensity: 0.5/5)
• EU Allergens: None declared by the brand based on the current INCI list.

This serum is designed for sensitive skin, but it is a concentrated formula. We always recommend a patch test before first use.

Patch Test Protocol:

1. Apply a pea-sized amount to a clean, small area of skin, such as your inner arm, jawline, or behind your ear.
2. Wait 24 hours to observe for any signs of irritation like redness, itching, or burning.
3. If no reaction occurs, the product is likely safe for you to use on your face. Re-check at 48 and 72 hours for any delayed reaction.
4. If irritation occurs, discontinue use immediately.

Who Should Use with Caution: While hypoallergenic-tested, individuals with a known allergy to any of the ingredients, particularly botanical extracts, should avoid this product. If you experience breakouts, it could be temporary purging, but if it persists beyond 2-3 weeks or is accompanied by irritation, stop use.

Teens: This serum can be suitable for teens dealing with post-acne marks, but they should build a consistent routine of cleanser, moisturiser, and daily sunscreen first.

• Texture: A lightweight, slightly viscous watery-gel.
• Feel: Spreads easily and absorbs within a minute, leaving skin feeling hydrated and plump, not sticky or oily.
• Scent: Neutral/unscented.
• pH: Approximately 6.46. This gentle pH helps maintain a healthy skin barrier and makes it compatible for layering.
• Fungal Acne (FA) Caveat: Contains Shea Butter and Hydrogenated Lecithin, which may be a trigger for some individuals with Malassezia folliculitis. Patch test recommended if you are prone to FA. Individual responses vary.

• Issue: Small bumps or breakouts appear after starting.
  Fix: This may be "purging" as the active ingredients increase cell turnover. It should clear within 2-3 weeks. If it's itchy or persists, it could be a reaction; stop use. Reduce frequency to every other day to help your skin adjust.
• Issue: Skin feels a bit tight or dry.
  Fix: You might be applying it to dry skin or not using a sufficient moisturiser. Apply the serum on skin still damp from toner, and always follow with a cream to lock in the hydration.
• Issue: No visible results after 8 weeks.
  Fix: Are you using a broad-spectrum sunscreen (SPF 30+) every single day, rain or shine? Hyperpigmentation treatment will fail without consistent sun protection, as UV exposure creates new pigment.

• Humid Summer: The lightweight, non-greasy texture is perfect for Mauritius's humid conditions. It provides essential hydration and treatment without feeling heavy or sticky. For very oily skin types, this serum followed by a good sunscreen may be enough for your morning routine.
• Drier Winter/AC Exposure: During the slightly drier winter months or if you spend a lot of time in air-conditioning, this serum provides a great hydrating base. Be sure to layer a more substantial cream over it to prevent moisture loss in the dry air.

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 codes and expiration dates printed on the packaging (YYYY.MM.DD format). For any questions or to verify a batch code, you can reach out to us directly on WhatsApp.

• Brand Test: Numbuzin conducted a 4-week clinical study on this serum, reporting an 18.90% improvement in skin tone uniformity and a 9.65% reduction in visible dark spots. The product also passed hypoallergenic and skin irritation tests.

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

• Ingredient Rationale: The formula's effectiveness is based on the known scientific functions of its key actives. Niacinamide (5%) is widely studied and proven to inhibit melanosome transfer, reducing hyperpigmentation. Tranexamic Acid (4%) is an evidence-backed ingredient for treating melasma and PIH. The various forms of Vitamin C and Glutathione are powerful antioxidants that protect against and repair UV-induced pigmentation. Panthenol (5%) is a well-documented soothing and barrier-repairing agent.

A 30ml bottle contains approximately 60-70 pumps.

• Used once per day (2-3 drops/1 pump): The bottle will last approximately 2 to 2.5 months. Reorder every 2 months.
• Used twice per day (2-3 drops/1 pump each time): The bottle will last approximately 1 to 1.5 months. Reorder monthly.

This concentrated formula offers excellent value by combining multiple evidence-based brightening ingredients in one step, potentially replacing the need for separate Vitamin C, Niacinamide, and Tranexamic Acid serums.

Starter Essentials (AM, Mauritius-friendly)

• Anua HEARTLEAF QUERCETINOL PORE DEEP CLEANSING FOAM 150ML — A gentle yet effective cleanser to prep the skin without stripping it.
• NUMBUZIN NO.5+ VITAMIN CONCENTRATED SERUM — Your primary treatment for targeting dark spots and evening out skin tone.
• Beauty of Joseon RELIEF SUN : RICE + PROBIOTICS 50ML — A lightweight, hydrating sunscreen that protects against UV damage, which is essential for preventing new dark spots.

Targeted Results (PM focus)

• Anua HEARLEAF PORE CONTROL CLEANSING OIL MILD 200ML — To effectively remove sunscreen and impurities as the first step of your double cleanse.
• I'M FROM RICE TONER 30ML — Provides a hydrating and brightening base that enhances serum absorption.
• NUMBUZIN NO.5+ VITAMIN CONCENTRATED SERUM — The core treatment to work on pigmentation overnight.
• ETUDE SOONJUNG 2X BARRIER INTENSIVE CREAM 60ML — A barrier-repairing moisturiser to lock in the serum and support skin health.

Compatibility Note: Avoid using strong acids (like The Ordinary Glycolic Acid 7%) or retinoids on the same night as this serum if you have sensitive skin. Alternate nights for best results.

This serum is an excellent choice if your primary concerns are fading post-acne marks (PIH), sun spots, and achieving an overall brighter, more even skin tone with a gentle, hydrating formula.

Consider these alternatives from our catalog if your goals are slightly different:

• For More Intense Brightening & Antioxidant Focus: COSRX THE VITAMIN C 23 SERUM 20ML
  Choose this if: Your main goal is potent, pure Vitamin C power for anti-aging and tackling stubborn sun damage, and your skin is not highly sensitive.
  Why: It offers a very high concentration (23%) of L-Ascorbic Acid for faster, more dramatic results on texture and deep-set pigmentation, but may be more irritating than the Numbuzin No.5.
• For a Gentler, Soothing & Brightening Approach: Beauty of Joseon GLOW DEEP SERUM : RICE + ALPHA ARBUTIN
  Choose this if: You have sensitive skin and want to focus on hydration alongside gentle brightening.
  Why: It combines Rice Bran Water with 2% Alpha-Arbutin, a very stable and gentle tyrosinase inhibitor. It's an excellent, fragrance-free option for beginners to brightening actives.
• For Acne-Prone Skin with Active Blemishes & PIH: Beauty of Joseon GLOW SERUM : PROPOLIS + NIACINAMIDE
  Choose this if: You are dealing with active breakouts and inflammation in addition to the marks they leave behind.
  Why: This serum combines Propolis to reduce inflammation and fight acne-causing bacteria, with Niacinamide to control oil and fade PIH. It treats both the cause and the effect of blemishes.

Mindful Use: If you already have a comparable brightening serum at home, we encourage you to finish it first. This helps you get a fair assessment of its results and reduces waste.

• Format: A 30ml or 50ml glass bottle with a pump applicator for hygienic and controlled dispensing.
• Stability: The opaque bottle helps protect the light-sensitive vitamin derivatives from degradation. To maximize potency, store it in a cool, dark place away from direct sunlight (like a cabinet or drawer, not a sunny windowsill).
• Travel: The 30ml size is travel-friendly. The pump can be locked by twisting, reducing the risk of leaks in your bag.
• Recycling (Mauritius): The glass bottle is recyclable. Please rinse it out and dispose of it with your glass recyclables. The plastic pump can be disposed of in the trash.

Aggregated sentiment from verified purchasers and community forums.

"This has become a staple... It's effective, gentle, and reasonably priced. My skin looks brighter and more even-toned. Those annoying dark spots from old acne scars are finally fading. No irritation at all, which is a big plus for my sensitive skin!"
- Reddit, r/AsianBeauty review (2024)

"I'm on my second bottle... It helped a lot in fading my stubborn red acne marks from months ago. No irritation or sensitivity so I've used it almost everyday."
- Reddit, r/AsianBeauty review (2024)

A fair caveat: Some users experienced breakouts of small bumps after starting the serum. One reviewer noted, "The serum has some comedogenic ingredients like Shea butter, I had the same happening to me." This suggests that while it works for many, those highly prone to clogged pores should patch test carefully.
- Paraphrased from Reddit, r/AsianBeauty discussion (2024)

Numbuzin is a Korean skincare brand that believes in simplifying the path to great skin. With their unique slogan "What's Your Number?", they replace confusing product names with numbers, making it easy for customers to find the exact solution for their skin concerns. Their philosophy is centered on providing honest, effective skincare with high-quality ingredients, encouraging users to listen to their skin and create a personalized routine that truly works for them.

• MFDS: Ministry of Food and Drug Safety (Korea). The regulatory body that approves functional cosmetics. Formerly known as the KFDA.
• PIH (Post-Inflammatory Hyperpigmentation): The dark marks or spots left on the skin after a pimple or other skin injury has healed. This is caused by an overproduction of melanin.
• Niacinamide: A form of Vitamin B3 that brightens skin, reduces inflammation, controls oil, and strengthens the skin barrier.
• Tranexamic Acid: An active ingredient that helps to fade discoloration by inhibiting melanin production, especially effective for stubborn spots and melasma.
• Glutathione: A powerful antioxidant that helps to brighten the skin and improve overall skin tone and clarity.
• INCI: International Nomenclature of Cosmetic Ingredients. The standardized system for listing ingredients on a product.
• PAO: Period After Opening. The symbol on a product that tells you how many months it will remain stable and effective after being opened.

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

At Adilsons, we are committed to bringing you authentic, effective, and ethically-sound beauty products. We carefully curate our selection, sourcing directly from brands and trusted distributors in South Korea. Our promise is one of 100% authenticity, transparency, and a dedication to helping you find the best solutions for your unique skin journey.

Can I use this serum if I have active acne?
Yes, it is gentle and contains anti-inflammatory ingredients like Niacinamide and Panthenol that can help soothe active breakouts while also working to prevent the dark marks they leave behind.

Will this serum make my skin peel?
No, unlike some strong acid treatments, this serum is not designed to cause peeling. It works by inhibiting melanin production within the skin. Some people new to actives might experience mild flaking if their skin is very dry, which can be managed with a good moisturiser.

Is it better to use this in the morning or at night?
It can be used in both. Using it in the AM provides antioxidant protection against environmental damage that can cause dark spots. Using it in the PM allows it to work with your skin's natural repair cycle. If you are only using it once a day, AM use followed by sunscreen is an excellent choice.

What's the difference between this and the Numbuzin No.5 Toner Pads?
The toner pads offer gentle daily exfoliation and deliver a lower concentration of the active ingredients. This serum is a more concentrated treatment step designed for intensive targeting of dark spots. They can be used together in a routine for enhanced results.

Best For: Individuals of all skin types looking to fade post-acne marks, sun spots, and even out their overall skin tone.

Key Benefits:

• Effectively brightens and reduces hyperpigmentation.
• Hydrating and soothing, making it suitable for sensitive skin.
• Lightweight, non-sticky texture that layers well with other products.

Keep in Mind:

• Some users with highly acne-prone skin have reported breakouts; a patch test is crucial.
• Results on deep, long-standing pigmentation will require patience and consistent use over several months.
• Daily sunscreen use is mandatory to see and maintain results.

• Coverage: Island-wide delivery (Mauritius).
• Processing & Timing: Orders process in 1–2 business days. Delivery typically takes 1–5 business days after partner pickup.
• Express: May be available. Request on WhatsApp: +230 5 778 2336.
• Liquids/Sensitive Items: Serums like this are door-to-door or pickup only; checkout enforces this.
• Pickup: Available at Citadelle Mall.
• Returns: No change-of-mind exchanges.
• Refunds (Summary): For items defective/damaged on receipt (report within 48h), wrong item, or manufacturing defects within 6 months. Opened skincare is non-returnable unless damaged on delivery.
• Source of Truth: This is a snapshot. The policy pages are final.

Policy Links:

• Refunds & Returns Policy
• Shipping Policy