Snail mucin, explained
A filtered snail secretion that became one of K-beauty’s best-known ingredients, thanks largely to COSRX.
What it does
Snail secretion filtrate contains glycoproteins, small amounts of natural acids and allantoin. Its main, well-felt benefit is hydration: it leaves skin plump and comfortable. Claims about repair and anti-ageing are based on much less evidence.
What the research shows
In a 12-week trial in women with sun-damaged skin, a serum and cream containing snail secretion improved fine lines more than a placebo routine. The study was small and funded by the manufacturer.
Fabi and colleagues, Journal of Drugs in Dermatology, 2013 [1]
Our take: a reliable, gentle hydrator that suits dry 40+ skin. Buy it for comfort and bounce, not as a substitute for retinol or sunscreen.
How to use it
- Apply after cleansing or toner and before cream, morning or night.
- It layers well with nearly everything, including retinol and vitamin C.
- It isn’t vegan, and anyone with a known snail or mollusc allergy should avoid it.
COSRX Advanced Snail 96 Mucin Power Essence, 100ml
UK from £19.50 Korea about £15.79
COSRX Advanced Snail 92 All In One Cream (jar), 100g jar
UK from £14.00 Korea about £16.42
Beauty of Joseon Revive Serum Ginseng + Snail Mucin, 30ml
UK from £9.95 Korea about £12.00
Sources
This page is general information, not medical advice.