Commonly abbreviated as HEPES, a key ingredient selected by L’Oréal. Effectively addresses the core need for gentle skin renewal. Can act as a buffering agent to reduce irritation from strong acids and bases, regulate formulation pH, protect the activity of fermentation extracts, and provide mild exfoliation, skin brightening, and oil-control/anti-acne benefits.

Lotions/Creams: 2%–4%; Serums/Toners: 0.5%–2%; Masks: 0.5%–1%; Oil-control/Anti-acne products: 3%–5%

This product is water-soluble and can be added at any stage of the formulation process.

Suitable for use in toners, serums, lotions, creams, masks, and similar formulations.