SNAP-8

Key points

• SNAP-8 is a short peptide added to skincare, marketed to reduce the look of expression lines.
• It is one of several peptides described as a gentle, topical alternative to muscle relaxing injections.
• On the skin, with no medicinal claims, it is regulated as a cosmetic ingredient in the UK.
• The evidence is modest, and it is far milder than an injectable treatment.

Quick facts

What it is

Cosmetic skincare peptide (expression lines)

Marketed for

Softening expression lines

UK status

Legal as a cosmetic ingredient (no medicinal claims)

Evidence

Modest

How it works

SNAP-8 is used in cosmetics with the aim of gently easing the small muscle contractions that crease the skin into expression lines. Applied to the surface, its effect is far gentler than an injection. Most of the supporting evidence is from laboratory and manufacturer studies.

What the evidence shows

There are studies, often from manufacturers, suggesting modest effects on the look of expression lines. Independent, high quality trials are limited, so claims should be kept modest.

What it does not settle

• Independent high quality evidence is limited.
• Effects are usually modest and build slowly.
• Results depend on the product and how it is used.

Side effects

Common

• Usually well tolerated, though some people get mild irritation or redness. A patch test is sensible.

Report any suspected side effect through the MHRA Yellow Card scheme.

UK legal status and access

As a topical cosmetic ingredient with no medicinal claims, SNAP-8 is legal and widely sold in skincare. Any version sold with medicinal claims, or for injection, would fall under medicines rules.

Common questions