Butylene Glycol부틸렌글라이콜
부틸렌글라이콜bu-til-len-geul-la-i-kol
On a Korean label: 부틸렌글라이콜 = Butylene Glycol.
What it is
A diol (a kind of glycol) used as a solvent and skin-conditioning agent. It helps dissolve plant extracts, so it is everywhere in Korean skincare.
On a Korean label
Written 부틸렌글라이콜, usually near the top of the list.
Korean rules
The Korean ingredient dictionary lists no limit, label caution or functional-ingredient status for it.
Questions
What is 부틸렌글라이콜?
Butylene glycol, a solvent and humectant.
Sources
Checked 26 October 2026. Rules change — the official texts above are the final word.