Sodium Metabisulfite

An antioxidant and preservative salt that prevents oxidation and microbial growth in formulations. It is well tolerated for most users, though people with sulfite sensitivity should avoid it; those without documented sulfite intolerance can use products containing it without concern.

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.