COSRX The 6 Peptide Skin Booster Serum

Humectant and preservative booster. Considered safe for cosmetic use with low systemic exposure.

1,2-Hexanediol is commonly used as a solvent and preservative booster; topical exposure is low and it has no known pregnancy or breastfeeding concerns at cosmetic concentrations, though very sensitive skin may occasionally react.

Niacinamide (vitamin B3) is widely used for barrier support and tone/texture benefits, and is generally considered safe in pregnancy and breastfeeding when used topically at cosmetic concentrations.

Synthetic peptide used as a skin-conditioning ingredient. Reviewed cosmetic safety sources do not indicate a known pregnancy- or breastfeeding-specific concern in normal topical cosmetic use. The available cosmetic safety assessment concluded this ingredient is safe in cosmetics at concentrations up to 0.005%; safety above that concentration was not established in the reviewed report.

Copper-binding carrier peptide also known as GHK-Cu, used topically in cosmetic skin-renewal, anti-aging, barrier-support and hair/scalp products. Reviewed literature describes topical cosmetic use and does not identify a pregnancy- or breastfeeding-specific risk signal for normal topical use. This assessment does not apply to injectable copper peptides or oral peptide/copper supplementation.

Synthetic peptide mimetic used in topical cosmetic anti-aging formulas, often described as a neurotransmitter-inhibiting or expression-line peptide. Available cosmetic ingredient references do not identify a pregnancy- or breastfeeding-specific concern for normal topical cosmetic use.

Allantoin is a soothing skin protectant commonly used to help reduce irritation and support comfort, with no known pregnancy or breastfeeding concerns in topical cosmetic use.

Sodium hyaluronate (hyaluronic acid salt) is used for hydration and cushioning, with very low systemic absorption from topical use and no known pregnancy or breastfeeding concerns at cosmetic concentrations.

An amino-sugar derivative used for skin conditioning and hydration. Cosmetic safety reviewers concluded that acetyl glucosamine is safe in current practices when formulated to be non-irritating. No pregnancy-specific concern was identified for normal topical cosmetic exposure.

Amino acid used as a humectant and skin/hair-conditioning support ingredient. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified.

Amino acid used as a humectant and skin/hair-conditioning support ingredient. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified.

Amino acid used as a humectant and skin/hair-conditioning support ingredient. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified.

Amino acid used as a humectant and skin/hair-conditioning support ingredient. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified.

Amino acid used as a humectant, skin-conditioning agent, and pH-adjusting support ingredient. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.

Amino acid used as a humectant and skin/hair-conditioning support ingredient. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified.

Betaine is a humectant/osmolyte used to support hydration and reduce irritation potential in formulas; it is considered low concern with no known pregnancy or breastfeeding risks in topical cosmetic use.

Natural-moisturising-factor humectant that helps bind water in the stratum corneum. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.

Humectant and buffer that also forms part of the skin's natural moisturising factor. Reviewed cosmetic safety sources support topical cosmetic use; irritation and sun-sensitivity considerations relate more to formula context than to pregnancy-specific risk.

Pyrrolidone carboxylic acid, a natural-moisturising-factor component used as a humectant. Cosmetic safety reviewers concluded that PCA and its salts are safe in current practices, but they should not be used in formulations where N-nitroso compounds can form. No pregnancy-specific concern was identified for compliant topical use.

This naturally occurring alpha-amino acid is used for humectancy and skin or hair conditioning. The Cosmetic Ingredient Review found alpha-amino acids safe in current cosmetic use; the low concentrations and limited dermal uptake are not expected to create a pregnancy- or breastfeeding-specific concern.

An amino acid or amino-acid salt used for conditioning, buffering or hydration. Cosmetic safety reviewers concluded that the assessed animal- and plant-derived amino acids are safe in current practices of use and concentration. No pregnancy-specific concern was identified for normal topical exposure.

Vitamin E antioxidant used to protect oils and support the skin barrier. Not associated with pregnancy-specific concerns at cosmetic exposure.

A high-molecular-weight carbohydrate gum produced by microbial fermentation and used for hydration, texture or film formation. Cosmetic safety reviewers concluded that the assessed microbial polysaccharide gums are safe in current practices of use and concentration. Dermal absorption of the intact polymers is expected to be limited.

Plant-derived emollient oil used to soften skin and support formula texture. Reviewed cosmetic safety sources support current cosmetic use, with no pregnancy- or breastfeeding-specific topical concern identified in the material reviewed.

Hydrogenated emulsifier used to support skin barrier feel. Not associated with pregnancy-specific concerns.

Polymer thickener used to stabilise emulsions. Large-molecule ingredient with low systemic absorption.

Large polymer thickener and stabilizer used in gels, serums and creams. Systemic exposure from topical cosmetic use is expected to be low, with no pregnancy- or breastfeeding-specific concern identified in reviewed cosmetic references.

Solvent and humectant commonly used in leave-on products. Not associated with pregnancy-specific concerns at cosmetic exposure levels.

Natural polysaccharide thickener used for stability and texture. Not associated with pregnancy-specific concerns.

Preservative booster and skin-conditioning agent. Considered safe for cosmetic use with low systemic exposure when used as intended.

Skin-conditioning ingredient commonly used in leave-on skincare. Reviewed cosmetic safety sources support normal topical use, with no pregnancy- or breastfeeding-specific topical signal identified in the material reviewed.

A large phosphorylcholine-containing conditioning polymer. Cosmetic safety reviewers concluded that acryloyloxyethyl phosphorylcholine polymers, including polyquaternium-51, are safe in current practices. Available testing did not indicate sensitisation, and dermal absorption of the finished polymer is expected to be limited.

Disodium EDTA is a chelating agent used to improve formula stability and performance; it is considered low concern in topical cosmetic use, with no known pregnancy or breastfeeding risks at typical concentrations.

pH adjuster used in small amounts to maintain product stability. Not associated with pregnancy-specific concerns.

Humectant and preservative booster used to support product stability. Low systemic exposure expected from topical cosmetic use.

A volatile solvent and denaturant used in small amounts in cosmetics. Cosmetic safety reviewers concluded that t-butyl alcohol is safe in current practices of use and concentration; their assessment included reproductive and developmental data and found a large exposure margin at cosmetic use levels. It may irritate eyes or skin in concentrated form.

Preservative widely used in foods and cosmetics. Considered safe at regulated concentrations with low systemic exposure from topical use.