The 6 Peptide Skin Booster Serum
$25
Paraben-Free
Sulfate-Free
Fragrance-Free
Silicone-Free
PEG-Free
This serum pairs niacinamide with a six-peptide complex, including copper tripeptide-1 and acetyl hexapeptide-8, aimed at firming and softening the look of fine lines over time. Sodium hyaluronate and a handful of amino acids round out the formula for hydration, and it's light enough to layer under moisturizer without pilling. COSRX positions it as a booster meant to be added into an existing routine rather than used on its own.
Compare
Best COSRX Ingredient-Matched Alternatives
#1 Best match
Charlotte Tilbury
Charlotte's Magic Serum with Vitamin C
$30
#2 Strong match
PEACH & LILY
Glass Skin Refining Serum
$39
#3 Strong match
Dior
Capture Totale Retishot Retinol Night Treatment
$120
See additional matches
What this product does
Benefits
Why it works
Ingredient Highlights
N
Niacinamide
Antioxidant
A vitamin B3 that fades dark spots, shrinks pores, and balances oil.
H
Hyaluronic Acid
Humectant
A humectant that pulls moisture into the skin which helps minimize fine lines and wrinkles, plumpen skin, and reduce dryness.
P
Peptides
Peptide
A peptide aimed at fading the look of dark spots and blotchiness.
The full formula
Full Ingredient List
Oligopeptide-68Palmitoyl Tripeptide-8Sodium OleateLysine HClC&ASh-Polypeptide-121DextranDipeptide Diaminobutyroyl Benzylamide DiacetateSodium PCAAmmonium Acryloyldimethyltaurate/VP CopolymerPolyacrylate Crosspolymer-6t-Butyl AlcoholAcetyl GlucosaminePotassium SorbatePentylene GlycolSodium LactateNiacinamide (Vitamin B3)BetaineGlycine Soja (Soybean) OilGlycineSerineGlutamic AcidAlanineProlineThreonineHyaluronic Acid (Sodium Hyaluronate)Copper Tripeptide-1Argireline (Acetyl Hexapeptide-8)Dipropylene GlycolArginineXanthan gumAdenosinePolyquaternium-51Citric AcidHydrogenated LecithinAllantoinButylene Glycol1,2 HexanediolCaprylyl GlycolTocopherol (Vitamin E)Water (Aqua)EthylhexylglycerinDisodium EDTAGlycerin