Ingredient

acetyl tetrapeptide-3

Low risk

FunctionPeptide

What it is — Acetyl Tetrapeptide-3 (INCI: Acetyl Tetrapeptide-3) is a synthetic signal peptide, often used in scalp- and hair-focused as well as skin formulas.

What it does — It is commonly used as a conditioning peptide marketed to support the look of denser-feeling hair and a smoother skin surface. Descriptions are cosmetic rather than medical.

Typical use — It appears in scalp serums, hair tonics, and skin serums and creams, usually at low levels within a peptide complex.

Who it suits / good to know — Broadly suitable and low-irritation. Peptides are supporting actives whose feel builds gradually with consistent use.

Safety — DHALIORA grades it low risk: a cosmetic peptide with no notable irritation history at use levels. This reflects the ingredient in general and is not medical advice; patch-test if your skin or scalp reacts easily.

Why we grade it Low: Low risk - cosmetic peptide with no notable irritation history at use levels.
Cross-reference

Found in these DHALIORA products

Found in 0 DHALIORA products

Not currently in any DHALIORA product.

How grades are set — Risk reflects our own reading of publicly available safety data, an EWG-style reading shown at the worst-case grade we've assigned this ingredient across products. It isn't a third party's proprietary score, and it isn't medical advice. Always read the packaging and patch-test where indicated.
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