Benzotriazolyl Dodecyl P-Cresol

Benzotriazolyl dodecyl p-cresol is a synthetic photostabiliser used in sunscreens and UV-protective formulations. Its primary role is to protect other ingredients—particularly UV filters and vitamin A derivatives—from degrading when exposed to sunlight.This ingredient works behind the scenes rather than providing direct skin benefits. It helps maintain the integrity and effectiveness of a sunscreen formulation over time, ensuring that the product continues to offer reliable protection even after sun exposure.

When UV filters and other photolabile ingredients are exposed to sunlight, they can break down and lose their protective or beneficial properties. Benzotriazolyl dodecyl p-cresol absorbs UV energy and dissipates it as heat, acting as a 'sacrificial' molecule that shields more important ingredients from photodamage.By stabilising the active ingredients in a sunscreen, this photostabiliser helps ensure that the product maintains its sun protection factor and efficacy for longer, particularly in products stored in clear or translucent packaging.

This ingredient is used by formulators rather than consumers—you won't apply it directly. Simply ensure your sunscreen or UV-protective skincare product contains it if you want added reassurance that the formula's active ingredients will remain stable and effective. Store products away from direct sunlight and heat to further protect the formulation.

Benzotriazolyl dodecyl p-cresol is approved for use in cosmetics in most regions and is generally well-tolerated. It is present in a small percentage of skincare products and has no known common adverse effects at typical concentrations.