Globally-approved sunscreen agent that protects skin from the UVB range of sunlight. It also helps stabilize the UVA sunscreen active, avobenzone. Like all synthetic sunscreen actives, octocrylene can be sensitizing for some people.
References for this information:
Quimica Nova, July 2014, volume 37
AAPS PharmSciTech, 2009, pages 384-390
Contact Dermatitis, April 2014, pages 193-204; and January 2003, pages 46-47
Dermatologic Clinics, January 2006, pages 35-51