Firm. Plump. Future-Proof.

Peptides are the building blocks of youthful skin — and the COSRX The 6 Peptide Skin Booster Serum delivers six of the most effective ones in a single, generously sized formula. This lightweight, fast-absorbing serum works at a cellular level to signal the skin to produce more collagen and elastin, visibly firming, plumping, and smoothing with every application. Whether you're looking to prevent the first signs of ageing or address existing fine lines and loss of firmness, this is the serum that invests in your skin's future — one drop at a time.

How to Use

1. After cleansing and toning, dispense 2–3 pumps onto clean fingertips.
2. Gently press and pat into face and neck until fully absorbed — do not rub.
3. Allow to absorb fully before applying moisturiser.
4. Use morning and/or evening for best results.
5. In the morning, follow with SPF.

Tip: The generous 150ml size makes this ideal for layering — apply 2–3 times using the hand patting method before moisturising for an intensive firming and plumping boost. Also works beautifully mixed with your moisturiser for an extra peptide hit.

Key Ingredients

• Acetyl Hexapeptide-8 (Argireline) — Known as "Botox in a bottle", this peptide relaxes facial muscle contractions to visibly smooth expression lines and prevent the deepening of dynamic wrinkles over time.
• Palmitoyl Tripeptide-1 & Palmitoyl Tetrapeptide-7 (Matrixyl 3000) — A clinically studied peptide complex that stimulates collagen and elastin synthesis, visibly firming the skin and reducing the appearance of fine lines and wrinkles with consistent use.
• Leuphasyl — Works synergistically with Argireline to enhance the muscle-relaxing effect, delivering a more pronounced smoothing result on expression lines.
• Copper Tripeptide-1 (GHK-Cu) — A powerful regenerative peptide that promotes wound healing, stimulates collagen production, and delivers antioxidant protection — supporting overall skin health and resilience.
• Sodium Hyaluronate — Delivers deep, lasting hydration to plump fine lines and keep skin supple and comfortable, amplifying the firming effect of the peptide complex.

Full Ingredient List (INCI)

Water, Glycerin, Butylene Glycol, Niacinamide, Sodium Hyaluronate, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Leuphasyl, Copper Tripeptide-1, Panthenol, Allantoin, Centella Asiatica Extract, Adenosine, Carbomer, Arginine, 1,2-Hexanediol, Ethylhexylglycerin, Phenoxyethanol, Fragrance.

Formulated without: Parabens · Sulfates · Artificial colourants · Mineral oil

Product Details

• Volume: 150ml
• Skin Type: All skin types, especially mature, fine line-prone, and loss-of-firmness skin
• Concern: Fine lines, wrinkles, loss of firmness, dullness, dehydration
• Texture: Lightweight, fast-absorbing serum
• Origin: South Korea