Drometrizole trisiloxane (INCI) is a lipophilic benzotriazole derivative marketed as Mexoryl XL by L'Oréal and is used in sunscreens to absorb UV radiation. It is a broad-spectrum UV absorber with two absorption peaks, one at 303 nm (UVB) and one at 344 nm (UVA). Drometrizole trisiloxane and ecamsule (Mexoryl SX) are often used together, because they show a synergistic effect in UV protection.

Availability Sunscreens with drometrizole trisiloxane are approved within the EU,COUNCIL DIRECTIVE of 27 July 1976 on the approximation of the laws of the Member States relating to cosmetic products Canada,Sunburn Protectants , Health Canada Australia,Australian Regulatory Guidelines for OTC Medicines - Chapter 10 Japan, and other countries, but not in the United States.

See also

Ecamsule (Mexoryl SX)A UV filter often used with drometrizole trisiloxane

References