Glycol Distearate

Glycol distearate is a fatty ester used primarily as an opacifier/pearlizing agent and thickener in rinse-off and leave-on products, typically at low percentages (about 0.5–5%). It is generally well-tolerated with low rates of irritation in standard use and patch testing, but in severely compromised or eczema-prone skin, any waxy surfactant-adjacent additive can occasionally contribute to stinging or follicular congestion, so it is not scored as fully inert. From a patient-safety perspective, it fits best as a very gentle, low-risk ingredient rather than a zero-irritation material. Safety Notes: Glycol distearate is primarily used as an opacifier/pearlizing agent and secondary structurant in surfactant systems; in commercial shampoos, body washes, and facial cleansers it commonly appears around 0.5–3%, with low-end “lightly pearled” or only slightly opacified formulas starting near ~0.1%. High-strength consumer OTC products (especially very pearlescent shampoos/bath creams and some rich cream cleansers) can reach ~5–8% when used as a major crystalline/pearling phase alongside surfactants and fatty alcohols; use at these levels is mainly in rinse-off formats due to aesthetics and wash-off behavior. There is no specific FDA/EU maximum concentration limit for glycol distearate in cosmetics; practical upper limits are driven by viscosity, crystallization, and stability (e.g., settling, hazing, or texture grittiness) rather than regulation.