Glycol Stearate

Glycol stearate is primarily an emollient/opacifier and emulsifier used in rinse-off and leave-on products typically around ~0.5–5%, and it is generally considered low-irritancy in standard patch testing. It is not a reactive active and has minimal direct irritant potential, though in highly eczema-prone or very reactive individuals it can occasionally contribute to irritation indirectly (e.g., occlusion or formulation interactions), so I rate it as very gentle rather than inert. Safety Notes: In commercial consumer products, glycol stearate is commonly used at very low levels (~0.1–0.5%) as a pearlizing/opacifying agent and secondary emollient in rinse-off cleansers, shampoos, and body washes, where a small dose produces visual opacity and slip. Leave-on creams/lotions more often use ~0.5–3% as part of the emollient/structuring system, while some consumer-available high-structure creams, cleansing creams, and conditioner bases push higher (up to ~10–15%) when glycol stearate is used as a major consistency/texture builder and lipid phase component. There is no specific FDA/EU maximum for glycol stearate; the upper end is typically limited by sensorial waxiness, viscosity/processing constraints, and emulsion stability rather than regulation.