COSRX The 6 Peptide Skin Booster Serum — Booster Multi-Cibles

Six peptides carefully selected orchestrate this formula: Acetyl Hexapeptide-8 (Argireline), known for its relaxing effect on micro muscle contractions, reduces expression lines without paralyzing the face. Copper Tripeptide-1 (GHK-Cu), a copper peptide naturally present in our plasma, stimulates the synthesis of healthy collagen while breaking down disorganized scar collagen — a dual mechanism that explains its effectiveness on firmness. Oligopeptide-68 inhibits the MITF gene responsible for melanin production: skin tone uniformity improves without irritation. SH-Polypeptide-121 plumps by boosting collagen production, while Palmitoyl Tripeptide-8 soothes invisible inflammations that accelerate aging. Finally, Dipeptide Diaminobutyroyl Benzylamide Diacetate regulates sebum and tightens pores. Niacinamide (vitamin B3) strengthens the skin barrier, hyaluronic acid (Sodium Hyaluronate) deeply hydrates, and adenosine supports cellular repair.

☀️ Morning routine

1. After cleansing, apply 2-3 pumps on dry face.
2. Gently pat — the watery texture absorbs in 10 seconds.
3. Follow with your vitamin serum (tolerated Vitamin C) then your cream.
4. Finish with SPF 50+ sun protection.

🌙 Evening routine

1. Same step after double cleansing: 2-3 pumps dabbed on.
2. Layer your retinol or other active — this booster enhances their absorption.
3. Seal with a repairing cream (like Advanced Snail 92).

💡 MPC tip : you can apply a second layer on targeted areas (eye contour, smile lines) for an immediate tightening effect.

This serum is suitable for:

• Mature skin (30+) seeking anti-aging prevention without a rich texture
• Tired epidermis with uneven texture, dull complexion, early fine lines
• Combination to oily skin that avoid greasy serums but want peptides
• Layering enthusiasts — perfect toner texture as the first step
• Validated sensitive skin : dermatological tests confirm non-comedogenicity and tolerance

Note : suitable for acne-prone skin (sebum regulation via Dipeptide), but if your skin reacts to copper, do a localized patch test 48 hours before.

From 2 weeks : refined skin texture, rapid absorption of subsequent serums, enhanced radiance. After 4 weeks of daily use, clinical tests by the Dermacosmetic Skin Science Laboratory show measurable results: +162.5% hydration, +76.4% texture improvement, +40.1% complexion clarity. 100% of participants report softer, smoother skin. Expression lines gradually fade — not a Botox effect, but a real visible reduction. Pores tighten, complexion evens out, firmness returns without a film-like effect. A serum that doesn’t do everything, but does its multi-target preparatory job well.

Why call it a "Skin Booster" rather than a regular serum?

Its ultra-fluid toner texture is applied right after cleansing, before your other serums. It boosts their effectiveness by preparing the epidermis to better absorb the following active ingredients — hence the name. You can layer it with vitamin C, retinol, niacinamide, or snail mucin without any conflict.

When will I see concrete results?

Softness and suppleness can be felt from the first week. Clinical tests show measurable improvements (texture, hydration, clarity) after 4 weeks of twice-daily use. For fine lines, expect 6 to 8 weeks of consistent use — peptides work deeply, not just on the surface.

Can the 6 peptides irritate my sensitive skin?

No. The Dermacosmetic Skin Science lab validated the formula on sensitive and acne-prone skin: zero irritation, zero comedogenic effect. The presence of Allantoin and Palmitoyl Tripeptide-8 even soothes micro-inflammations. If you are reactive to copper, test for 48 hours on your forearm first.

Can I use it if I already have a peptide serum in my routine?

Yes, but assess your needs. This booster combines 6 actions (firmness, pores, fine lines, radiance, sebum, soothing). If your other peptide targets ONLY one benefit (e.g., pure collagen), you can alternate — one in the morning, the other at night. Otherwise, this COSRX can replace your current peptide serum.

How long does the 150 ml bottle last?

With 2-3 pumps morning and evening, expect 3 to 4 months. The generous size (vs. the usual 30 ml) makes the investment worthwhile — especially given COSRX’s affordable price.

Watery texture = enough hydration for dry skin?

No. This booster hydrates (+162% proven) but does not replace a cream. Dry skin: layer an essence like Advanced Snail 96, then a rich cream. This serum prepares the skin; it does not seal moisture.

COSRX ("Cosmetics" + "RX" for prescription) has established itself since 2013 as the no-nonsense brand of functional skincare. No flashy packaging, no vague storytelling: short formulas, dosed active ingredients, affordable prices. Their philosophy? Treat skin problems like a pharmacist would treat a prescription — with rigor and proven effectiveness. The 6 Peptide Skin Booster illustrates this approach: six peptides with distinct roles, tested in an independent lab, minimalist texture that gets the job done without frills. COSRX targets problematic skin (acne, dehydration, sensitivity, aging) with a constant: transparent INCI lists and measurable results. Their best-sellers (Advanced Snail 96, Low pH Good Morning Cleanser) have built a global community that values effectiveness over marketing. Discover the entire COSRX range.

Full INCI: Water, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, Betaine, t-Butyl Alcohol, Sodium PCA, Sodium Lactate, Acetyl Hexapeptide-8, Copper Tripeptide-1, PCA, SH-Polypeptide-121, Serine, Alanine, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Glycine, Glutamic Acid, Lysine HCl, Threonine, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Arginine, Tocopherol (Vitamin E), Oligopeptide-68, Proline, Dextran, Palmitoyl Tripeptide-8, Glycine Soja (Soybean) Oil, Hydrogenated Lecithin, Potassium Sorbate, Sodium Oleate.

Fragrance-free, essential oil-free, silicone-free formula. The six peptides (in bold) are accompanied by amino acids (serine, alanine, glycine, proline) that strengthen the skin barrier and humectants (glycerin, hyaluronic acid, betaine) for multi-level hydration. Tocopherol (vitamin E) protects against oxidation. Slightly acidic pH to respect the hydrolipidic film.