Back to Ingredient Dictionary

Drometrizole Trisiloxane

Description

Drometrizole Trisiloxane, also known as Mexoryl XL, is a highly effective organic compound used in sunscreens and other skincare products for its potent UV-filtering properties. This oil-soluble molecule provides broad-spectrum protection against both UVA and UVB rays, making it a valuable ingredient in photostable sunscreen formulations. Its unique chemical structure allows it to remain stable when exposed to sunlight, ensuring long-lasting protection throughout the day.

The ingredient works by absorbing harmful UV radiation and converting it into harmless heat energy, thereby preventing skin damage and premature aging. Drometrizole Trisiloxane is particularly effective at blocking long UVA rays, which are known to penetrate deeper into the skin and contribute to photoaging and skin cancer risk. Its compatibility with other UV filters enhances overall sun protection when used in combination products.

Notably, Drometrizole Trisiloxane has a high molecular weight, which limits its skin penetration and reduces the potential for irritation or allergic reactions. This characteristic makes it suitable for use in formulations designed for sensitive skin. While widely used in European and Asian markets, it is not currently approved by the FDA for use in the United States, limiting its availability in some regions.