Methyl Gluceth-20 Benzoate

Methyl Gluceth-20 Benzoate is primarily a solubilizer/emollient (a sugar-derived ethoxylated glucoside ester) typically used at low percentages in leave-on products to improve feel and reduce tack. Available safety and patch-test experience with the Methyl Gluceth family suggests low irritancy and low sensitization potential, with rare reactions mainly in highly compromised barriers. Given its non-acidic, non-volatile nature and typical low-use levels, it is best classified as very gentle, while still acknowledging that extreme eczema flares can react to almost any surfactant-like solubilizer. Safety Notes: In commercial leave-on skincare (lotions, serums, moisturizers), Methyl Gluceth-20 Benzoate is most often used as a mild, water-soluble emollient/humectant-adjacent sensorial modifier at low levels (~0.05–0.5%) where it primarily improves slip and reduces tack. Higher-strength consumer-available products (rich moisturizers, barrier creams, and some specialty “hydrating” concentrates) can use it in the ~1–5% range to contribute more noticeably to emolliency and after-feel without destabilizing typical O/W systems. It is less common in rinse-off products, but when present the levels generally remain toward the lower end because short contact time reduces the benefit.