Benzotriazolyl Dodecyl P-Cresol

Benzotriazolyl Dodecyl P-Cresol, also known as Tinogard TL, is a broad-spectrum UV absorber.

It helps stabilize light-sensitive ingredients and protects other ingredients from breaking down due to light exposure (especially in transparent packaging).

This ingredient helps extend a product’s shelf life by preventing both photolytic (light-induced) and photo-oxidative degradation. It’s typically used at low concentrations, around 0.01% to 0.1%.

Despite being a chemical UV filter, this ingredient can be found in "100% mineral sunscreens". This is due to regulatory loopholes.