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Researched by Helena DeMaria-Williams

Formula IngredientAmino Acid

Serine

INCI: Serine

Serine is a non-essential amino acid that the body can synthesise naturally. In skincare, it is a key component of the skin's natural moisturising factor (NMF) and plays an important role in stratum corneum hydration. It most often appears in formulations as part of a moisturising amino acid complex, contributing to skin barrier function and water retention.

Category

Amino Acid

Irritation Risk

Low

Skin Types

all skin types, dry skin, dehydrated skin, sensitive skin, xerotic (very dry) skin

What does this do in a formula?

moisturisation, stratum corneum hydration, skin conditioning, supports natural moisturising factor, antistatic

Is Serine safe? Key considerations

Can Serine cause irritation?

Low Risk

Serine has an excellent safety profile with a CIR rating of A and an EWG hazard score of 1. No irritation concerns have been documented at cosmetic-use concentrations. No EU CosIng Annex II or III restrictions apply.

Does Serine increase sun sensitivity?

No Risk

Serine does not increase photosensitivity. No sun protection precautions are required.

Is Serine safe during pregnancy?

Safe

Serine is a naturally occurring amino acid present in the human body. No documented reproductive or developmental concerns for topical cosmetic use.

How does Serine work?

Serine is a non-essential amino acid that the body can synthesise naturally. In skincare, it is a key component of the skin's natural moisturising factor (NMF) and plays an important role in stratum corneum hydration. It most often appears in formulations as part of a moisturising amino acid complex, contributing to skin barrier function and water retention.