Back to Ingredient Dictionary

METHYLENE BIS-BENZOTRIAZOLYL TETRAMETHYLBUTYLPHENOL

Description

Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (MBBT) is a potent broad-spectrum UV filter widely used in sunscreen formulations. This organic compound provides effective protection against both UVA and UVB radiation, making it a valuable ingredient in sun care products. MBBT works by absorbing and scattering harmful UV rays, preventing them from penetrating the skin and causing damage.

One of MBBT's key advantages is its photostability, maintaining its effectiveness even after prolonged sun exposure. It is particularly efficient in protecting against long-wave UVA radiation, which is known to contribute to premature skin aging and DNA damage. MBBT is insoluble in water and oil, existing as a fine particulate dispersion in formulations, which contributes to its high UV protection factor.

In terms of safety, MBBT has been approved for use in sunscreens by regulatory bodies in various countries, including the European Union and Australia. It is generally well-tolerated by most skin types and is often used in combination with other UV filters to achieve optimal sun protection. However, as with any active ingredient, patch testing is recommended for individuals with sensitive skin or a history of allergic reactions to sunscreen components.