Cetearyl Glucoside

Cetearyl glucoside is a nonionic sugar-derived emulsifier used in leave-on creams/lotions typically around ~1–5%, and it is generally well-tolerated with low rates of irritant reactions in routine use. Human patch testing and real-world dermatitis data suggest irritation is uncommon, though barrier-compromised or highly reactive eczema patients can still experience mild stinging or irritation from emulsifier systems. Given its low intrinsic reactivity but non-zero risk in compromised skin, it fits best as very gentle rather than inert. Safety Notes: In commercial leave-on lotions/creams and hair conditioners, cetearyl glucoside is often used at low levels (~0.1–0.5%) as a co-emulsifier/stabilizer alongside other nonionic emulsifiers and fatty alcohols, especially when it appears mid-to-late on the INCI list. High-strength consumer O/W cream bases and “emulsifying wax” style systems built around cetearyl alcohol + cetearyl glucoside (used as the primary self-emulsifying structurant) commonly place the active emulsifier fraction in the ~3–8% range to build viscosity and robust stability; above this is uncommon OTC due to feel (waxy drag/soapiness) and potential for lamellar structuring to become overly stiff. No specific FDA/EU maximum applies for this ingredient in cosmetics, so practical formulation and sensorial limits define the observed market range across leave-on and rinse-off products.