Trimethylolpropane Triisostearate (CAS 68541-50-4) is a fully branched saturated triester synthesized from trimethylolpropane and isostearic acid. It is a colorless to pale yellow viscous oily liquid with excellent hydrophobicity, high heat resistance and outstanding oxidation stability, hardly rancid during long-term storage. This product has superior spreading power and soft skin feel, forming breathable protective film on skin without sticky residue. It is widely accepted in color cosmetics and high-end skincare as premium emollient. Meanwhile, its high viscosity index and low temperature fluidity make it ideal biodegradable synthetic ester base stock for industrial lubricants.
Strong moisturizing & film-forming ability, long-lasting skin smoothness Excellent compatibility with silicone, vegetable oil, mineral oil and all cosmetic esters High thermal stability, no discoloration under high temperature processing for lipstick & pressed powder Low acid value, low irritation, safe for facial & lip contact cosmetics Biodegradable synthetic ester, eco-friendly base oil for green lubricant Non-dangerous goods, easy sea/air shipment without hazardous certificate
Cosmetic Grade Color cosmetics: lipstick, lip gloss, long-wear foundation, cream blush, concealer Skincare: nourishing cream, body butter, massage oil, sunscreen cream Hair care: hair mask, hair styling oil, anti-frizz serum
Industrial Grade Biodegradable lubricant base oil for machinery Metal cutting & rolling fluid additive Internal lubricant for PVC, EVA plastic processing Anti-rust oil, textile smoothing agent

Primarily used in cosmetics and personal care, it effectively improves skin texture, imparting a smooth and moisturizing quality to products. It also enhances hydration by regulating the skin's surface condition. Its slightly sticky texture makes it suitable for basic cosmetics such as face creams and lipsticks, reducing application resistance by over 42%. By forming a uniform oil-phase matrix, it enhances pigment dispersion and color saturation. As a high-molecular-weight ester compound, it provides a smooth feel in shampoos and other hair care products, reducing hair friction damage while increasing product viscosity. Its long carbon chain structure helps improve formulation stability.