Polyglyceryl-10 Stearate

Polyglyceryl-10 stearate is a non-ionic emulsifier/surfactant typically used at low concentrations (~0.5–5%) and is generally well-tolerated, including in sensitive-skin formulations. Clinical and patch-test experience suggests low irritation and low sensitization potential compared with harsher surfactants, but any emulsifier can rarely sting or provoke irritation in severely compromised barriers (e.g., active eczema or post-procedure skin). Given patient-safety considerations for reactive populations, it fits best as very gentle rather than fully inert. Safety Notes: Polyglyceryl-10 Stearate is a nonionic O/W emulsifier commonly used at low levels (~0.1–1%) in lotions, serums, and cleansing emulsions primarily as an emulsification aid or co-emulsifier. In richer leave-on creams, mineral-sunscreen emulsions, and anhydrous-to-emulsion balm/cream systems sold OTC, it is sometimes used as a primary emulsifier/structurant in the ~3–8% range to build viscosity and stabilize higher oil loads. Above ~8% is uncommon in consumer skincare due to texture/drag and cost, and it is not subject to specific EU/FDA maximum concentration limits beyond general cosmetic safety requirements.