MAGNESIUM 3-HYDROXYBUTYRATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

MAGNESIUM 3-HYDROXYBUTYRATE

Safety grade: A

A form of magnesium that helps support skin hydration and maintain the skin barrier. This ingredient works to keep moisture locked in, which can help your skin feel smoother and look more refreshed. It's often used in moisturizers and serums.

Graded using: COSING.

Last verified: June 9, 2026