COSRX The 6 Peptide Skin Booster Serum 150ml – Korean 6-peptide first step serum Niacinamide Adenosine fragrance-free $25
COSRX 6 Peptide Booster texture – lightweight toner-like absorbs instantly first step serum boosts next products Korean 150ml
COSRX 6 Peptide Complex – six peptides targeting firmness expression lines tone calming Korean anti-aging booster serum
COSRX 6 Peptide Serum layering – use before serums ampoules compatible Vitamin C retinol ceramide snail mucin Korean
COSRX The 6 Peptide Skin Booster Serum 150ml – Korean 6-peptide first step serum Niacinamide Adenosine fragrance-free $25
COSRX 6 Peptide Booster texture – lightweight toner-like absorbs instantly first step serum boosts next products Korean 150ml
COSRX 6 Peptide Complex – six peptides targeting firmness expression lines tone calming Korean anti-aging booster serum
COSRX 6 Peptide Serum layering – use before serums ampoules compatible Vitamin C retinol ceramide snail mucin Korean

Cosrx The 6 Peptide Skin Booster Serum

$25.00
Quantity
🔒 Secure checkout · ✈️ Free US shipping $40+ · 🎁 Free samples with every order · 💬 Since 2018 — 100K+ orders served

COSRX's first-step peptide booster serum — six different peptides targeting firmness, expression lines, tone, and calming from six different pathways. Lightweight, toner-like texture absorbs instantly and boosts the performance of every product applied after it.

Niacinamide, Adenosine, a full amino acid profile, and a biomimetic NMF complex round out the formula. Fragrance-free. Clinically tested for hydration and firmness. Non-comedogenic. All skin types including sensitive and acne-prone. Vegan. 150ml.

  • 6-Peptide Complex — Six Pathways, One Step — six different peptides each targeting a different skin concern: firmness and elasticity, expression line smoothing, tone evening, fine line softening, skin renewal, and calming. The most comprehensive peptide complex in any K-beauty first-step serum. Multiple mechanisms working simultaneously.
  • Niacinamide + Adenosine + Acetyl Glucosamine — Brighten + Firm + Boost — Niacinamide evens tone, controls sebum, and supports the barrier. Adenosine improves elasticity and smooths fine lines. Acetyl Glucosamine brightens and acts as a HA booster for deeper hydration. Three proven actives beyond the peptide complex.
  • Full Amino Acid Profile + NMF Complex — Biomimetic Hydration — eight amino acids provide the building blocks of skin's Natural Moisturizing Factor. Three moisture-binding ingredients that mimic your skin's own hydration system. 
  • First-Step Booster — Layers Under Everything — use immediately after cleansing, before serums and ampoules. Toner-like consistency that absorbs in seconds with zero stickiness. Can be layered multiple times to intensify the effect. Compatible with Vitamin C, Retinol, Niacinamide, Ceramide, and Snail Mucin.
  • 150ml — Generous Size, Fragrance-Free — one of the largest peptide serum bottles in K-beauty. Lasts months of daily AM/PM use. No fragrance, no essential oils, non-comedogenic. Clinically tested. Suitable for sensitive and acne-prone skin.

After cleansing, apply 2–3 pumps to face and pat gently until absorbed. AM and PM as the first step. Can be layered. Fragrance-free. Vegan. 150ml.

More from Olive Kollection
Shop the full COSRX collection, browse our serums and ampoules, or find more for anti-aging.

Authentic Korean skincare at Olive Kollection since 2018 — free US shipping on orders $40+.

Use after cleansing as a toner before ampoule, serum or moisturizer. Dispense a few drops and pat gently over the face. Follow with serum and moisturizer.

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