Is Propylene Glycol Safe for Your Skin? Experts Weigh In

Propylene glycol is a widely used ingredient in thousands of skin and personal care products. Found in moisturisers, serums, and shampoos, it acts as a preservative, humectant, and performance booster for other ingredients. Despite its benefits, concerns remain about its effects on certain skin types. This colourless, odourless, syrupy liquid is known for its hydrating properties. It goes by several names, including 1,2-dihydroxypropane, methyl glycol, and trimethyl glycol. Regulatory bodies like the Agency for Toxic Substances and Disease Registry (ATSDR) classify it as safe for use in medicines, cosmetics, and food.

The Environmental Working Group (EWG) rates propylene glycol as 'fair' but warns it may irritate sensitive skin. People with eczema, allergies, or easily irritated skin could experience allergic reactions or contact dermatitis. While generally safe, those with skin conditions are advised to check product labels carefully. Cosmetic-grade propylene glycol is derived from petrolatum, which differs from commercial petroleum. This refined version is considered non-toxic and safe for topical application. Manufacturers continue to rely on it for its versatility in improving product texture and shelf life.

Propylene glycol remains a common ingredient in many beauty and personal care items. Most users tolerate it well, but those with sensitive skin or existing conditions should proceed with caution. Checking labels and patch-testing new products can help avoid potential irritation.