
BUMETRIZOLE
Description
Bumetrizole, also known as Eusolex 9020, is a potent ultraviolet (UV) filter commonly used in sunscreens and other skincare products. This oil-soluble compound belongs to the benzotriazole class of UV absorbers, providing broad-spectrum protection against both UVA and UVB rays. Bumetrizole is particularly effective at absorbing UV radiation in the 280-400 nm range, making it an essential ingredient in photostable sunscreen formulations.
The chemical structure of bumetrizole allows it to remain stable when exposed to sunlight, ensuring long-lasting protection throughout the day. It is often combined with other UV filters to enhance overall sun protection factor (SPF) and improve the photostability of the formulation. Bumetrizole is typically used at concentrations between 1% and 5% in skincare products, depending on the desired level of protection.
One of the key advantages of bumetrizole is its ability to prevent the degradation of other cosmetic ingredients sensitive to UV light, thus extending the shelf life of skincare products. While generally well-tolerated, it may cause irritation in individuals with sensitive skin. As with all UV filters, proper formulation and testing are crucial to ensure optimal efficacy and safety.