Back to Ingredient Dictionary

BIS(T-BUTYL BENZOXAZOLYL) THIOPHENE

Description

Bis(t-butyl benzoxazolyl) thiophene, commonly known as BBOT, is a fluorescent brightening agent used in various skincare and cosmetic formulations. This synthetic compound belongs to the family of optical brighteners and functions by absorbing ultraviolet light and re-emitting it as visible blue light. This optical effect helps to reduce the appearance of yellowing and imparts a brighter, more radiant look to the skin.

BBOT is particularly effective in sunscreen formulations, where it enhances the UV-protective properties of other active ingredients. Its ability to absorb and scatter light contributes to a more even skin tone and can help minimize the visibility of fine lines and wrinkles. The compound is stable in most cosmetic bases and compatible with a wide range of other ingredients.

In skincare products, BBOT is typically used in concentrations ranging from 0.1% to 1.0%. While it is generally considered safe for topical use, some individuals may experience sensitivity. As with any skincare ingredient, patch testing is recommended before incorporating products containing BBOT into a regular skincare routine. Its efficacy and stability make it a valuable component in anti-aging and brightening formulations.