Bemotrizinol (also known as Bisoctrizole) is a broad-spectrum UV filter that is commonly used in sunscreen formulations to provide protection against both UVA and UVB radiation. It is typically incorporated into cosmetic and personal care products such as sunscreens, moisturizers, and daily wear skin care products.

It is recognized for its photostability and is often used to stabilize other UV filters, helping to maintain consistent sun protection over time. Bemotrizinol is usually formulated as a micronized dispersion, as it is insoluble in water and oils, and is well-tolerated on the skin.