TEGO® FILMSTAR BST1 (INCI: Behenoyl Polyglyceryl-3 / Hydrogenated Dilinoleic Acid / Sebacic Acid Crosspolymer) is an innovative bio-based, biodegradable film former that boosts SPF performance across diverse sun care & UV formats. Its hydrophobic structure creates a uniform protective layer, enhancing UV filter efficiency without affecting texture, sensory and formulation stability – even in lightweight sprays and fluid formulas. By enabling high SPF with fewer UV filters, this innovative biopolymer supports more sustainable, microplastic-free formulations. In addition, TEGO® FILMSTAR BST1 provides dermatological benefits for soothing and skin-barrier repair. Combining strong protection with an environmentally responsible profile, it offers brands a next-generation solution for creating high-performing, eco- conscious sun care products.