Drometrizole Trisiloxane
Drometrizole Trisiloxane, also known by the trade name Mexoryl XL, is an oil-soluble chemical sunscreen agent developed by the L'Oréal group and patented in 1999. It functions as both a UVB and UVA filter, with peak absorbance at 303 nm (UVB) and 344 nm (UVA). It is noted for being photostable, meaning it does not significantly degrade upon sun exposure. It carries the cosmetic restriction designation VI/16 under CosIng regulations.
Provides broad-spectrum UV protection covering both UVB and UVA ranges. Its photostability helps maintain consistent sun protection over time. It is oil-soluble, making it suitable for incorporation into a variety of sunscreen formulations.
Subject to cosmetic use restrictions (CosIng VI/16), indicating regulated maximum usage concentrations in formulations.
