COSRX The 6 Peptide Skin Booster Serum
Analysis updated August 2026 · How Scout scores
At a glance
Summary
This serum contains several beneficial ingredients such as niacinamide, adenosine, and sodium hyaluronate, which are known for their hydrating and anti-aging properties. However, the presence of synthetic polymers like polyacrylate crosspolymer-6 and polyquaternium-51, along with the processed nature of the product, slightly lowers its overall rating. The formula is mostly safe, but the inclusion of these synthetic components prevents it from achieving a top-tier score.
Key ingredients 6
AdenosineVery Good
Adenosine is a beneficial ingredient known for its anti-wrinkle benefits. It helps to energize the skin's surface, making it look smoother and more youthful. It is generally well-tolerated by all skin types.
Risks
There are minimal risks associated with adenosine, though sensitive skin may experience slight irritation.
Benefits
Adenosine helps to reduce the appearance of fine lines and wrinkles.
Copper Tripeptide-1Very Good
Copper Tripeptide-1 is a peptide known for its skin-regenerating properties. It helps to stimulate collagen production and improve skin elasticity. It is beneficial for anti-aging purposes.
Risks
There are minimal risks, though some individuals may experience mild irritation.
Benefits
It promotes wound healing and reduces the appearance of fine lines and wrinkles.
AllantoinVery Good
Allantoin is a soothing and moisturizing agent that helps to protect the skin. It is known for its ability to promote cell regeneration and improve skin smoothness. It is suitable for sensitive skin.
Risks
There are no significant risks associated with Allantoin.
Benefits
It helps to soothe irritated skin and promotes healing.
NiacinamideGood
Niacinamide is a form of Vitamin B3 that is known for its anti-inflammatory properties. It helps improve skin texture and tone by reducing redness and blotchiness. It is well-tolerated by most skin types.
Risks
In rare cases, it may cause mild irritation or redness.
Benefits
Niacinamide helps in reducing the appearance of enlarged pores and improves skin barrier function.
Sodium HyaluronateGood
Sodium Hyaluronate is a salt form of Hyaluronic Acid, known for its excellent hydrating properties. It can hold up to 1000 times its weight in water, making it a powerful moisturizer. It is suitable for all skin types.
Risks
There are no significant risks associated with Sodium Hyaluronate.
Benefits
It helps to hydrate the skin, making it plump and reducing the appearance of fine lines.
WaterNeutral
Water is a common solvent used in cosmetic formulations. It helps dissolve other ingredients and provides a base for the serum. It does not have any active benefits or risks.
Risks
There are no known risks associated with water in cosmetic formulations.
Benefits
Water helps in the application and absorption of the serum.
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