1,2-BUTANEDIOL is graded A (Safe) by Expert·ING, based on COSING regulatory data.

1,2-BUTANEDIOL

Safety grade: A

1,2-Butanediol is a colorless, odorless liquid alcohol that is commonly used in skincare and cosmetic products. It belongs to the glycol family, similar to the more well-known ingredient propylene glycol.

It is used in cosmetic products to help attract and retain moisture in the skin, improve the texture and spreadability of formulas, dissolve other ingredients, and adjust the thickness of products.

Graded using: COSING.

Last verified: May 26, 2026