Octocrylene is a chemical compound, an ester produced by condensation of diphenylcyanoacrylic acid with 2-ethylhexanol, which belongs to the cinnamate family.

Chemical name 2-ethylhexyl 2-cyano-3,3-diphenylprop-2-enoate

Molecular Formula C24H27NO2

Safety
It is a widely used ingredient in sunscreens. Since 2003, many studies have reported patients with photocontact allergy.
de Groot AC, Roberts DW. Contact and photocontact allergy to octocrylene: a review. Contact Dermatitis. 2014 Apr;70(4):193-204. doi: 10.1111/cod.12205.


What it is used for and where
Cosmetics
Light stabilizer. It prevents light from degrading light-sensitive components and slows down degradation reactions that have already begun. The mechanism is, in a way, similar to antioxidants and the effectiveness depends on the.complexity of the formulation and the density of the product.

UV absorber. It acts by intercepting ultraviolet light before it can cause damage by reducing its energy through dissipation and returning it to a lower energy state.

UV filter. It is the defining ingredient in sun creams that can mitigate the sun's ultraviolet (UV) radiation, which is a high risk factor for the development of skin cancer, erythema and photo-ageing.
Synonyms: EC number 228-250-8
UNII 5A68WGF6WM
DTXSID9025299
Dioxybenzon
dioxybenzone
Trade name:

CAS: 6197-30-4