BELSIL® TMS 803 is the co-hydrolysis product of tetraalkoxysilane (Q unit) and trimethylethoxysilane (M unit). The chemical structure of BELSIL® TMS 803 can be seen as a three-dimensional network of polysilic acid units, which are endblocked with trimethylsilyl groups.

In sunscreen, skincare and color cosmetic applications, the Trimethylsiloxysilicate BELSIL® TMS 803 is an excellent water resistant additive and helps to hold pigments in place. It prevents agglomeration and maintains free-flowing characteristics in loose powder products.

In hair care compositions, the silicone resin provides volume and body, while imparting humidity resistance to the hair.