Butyloctyl Salicylate

Butyloctyl Salicylate is a non-exfoliating salicylate ester used mainly as an emollient/solvent and UV-filter booster, typically at a few percent up to ~10% in sunscreens and cosmetics. As an ester it lacks the keratolytic acidity of salicylic acid and is generally well tolerated, but salicylate-derived materials can still trigger stinging or rare contact reactions in highly reactive or eczema-prone skin—especially in leave-on, occlusive routines—so it is best classified as gentle rather than exceptionally gentle. Safety Notes: Butyloctyl Salicylate is used as an emollient/solubilizer and UV filter “booster” (oil-phase solvent) and appears at low levels (~0.1–1%) in many leave-on moisturizers and sunscreens as part of the emollient system or to help solubilize UV filters. In higher-performance OTC sunscreens and some anhydrous/tinted SPF products, it can be a major part of the oil phase, with commercial formulas using roughly 10–30% to improve feel, spread, and UV filter compatibility; rinse-off products typically use it at the low end due to cost/need and wash-off nature.