Hydroxylated Lecithin

Hydroxylated lecithin is a phospholipid-derived emulsifier/liposome former used at low concentrations (typically ~0.1–2%) to support barrier-friendly delivery and skin feel. Human patch/usage data and clinical experience generally show low irritation potential, but as a modified lipid mixture it can still sting or trigger reactivity in a minority of highly compromised or eczema-prone patients, so it is best classified as very gentle rather than inert. Safety Notes: In commercial skincare, hydroxylated lecithin is most often used as a barrier-supporting phospholipid/emulsifier at low levels (~0.05–0.3%) in serums, lotions, and sheet-mask essences where it primarily functions as a skin-conditioning/lamellar-structure aid. Mid-range use (~0.5–2%) is common in leave-on moisturizers and creams to improve skin feel and support delivery of actives. High-strength consumer-available formulas (typically richer barrier creams, lipid concentrates, and some encapsulation/delivery bases) can reach ~3–5%, above which stability, viscosity, and tackiness usually become limiting; rinse-off products generally sit toward the low end since deposition benefits are reduced.