What it is
A small zwitterionic molecule first found in sugar beet. In cosmetics it is a humectant.
On a Korean label
Written 베타인. Do not confuse it with 베타인살리실레이트 (betaine salicylate), which is a salicylate.
Korean rules
The Korean ingredient dictionary lists no limit, label caution or functional-ingredient status for it.
Questions
Is 베타인 an exfoliant?
No. Betaine (베타인) is a humectant. Betaine salicylate (베타인살리실레이트) is a different ingredient.
Sources
Checked 26 October 2026. Rules change — the official texts above are the final word.