Tinosorb M (Methylene Bis-Benzotriazolyl Tetramethylbutylphenol)
Also known as: bisoctrizole, MBBT
A modern broad-spectrum UV filter that both absorbs and scatters light.
What it does
Photostable broad UVA/UVB protection in elegant textures.
Worth knowing
Because it scatters light, it can leave a faint white cast on deeper skin tones.