Propylene Glycol Stearate

Propylene Glycol Stearate is primarily an emollient/emulsifier used at low levels in leave-on and rinse-off products (commonly ~0.5–5%) to improve texture and stability. As a fatty acid ester, it is generally non-sensitizing and shows low irritation potential in patch testing compared with free propylene glycol, though very reactive or eczema-prone skin can still experience occasional irritation from emulsifier systems. Given typical concentrations and its low inherent reactivity, it fits a very gentle profile while still acknowledging rare sensitivity in compromised barriers. Safety Notes: Propylene Glycol Stearate is used in consumer skincare primarily as an emollient/co-emulsifier and pearlizing/structuring agent; in leave-on creams/lotions it is commonly present at low levels around 0.1–1% to support emulsification and skin feel. In rinse-off cleansers/body washes and some richer OTC creams, higher levels (typically ~2–6%) are used to build viscosity/opacity and improve slip, with high-structuring/pearlized consumer formulations occasionally reaching about 10% total usage without being professional- or prescription-only.

Suitability