Octocrylene (2-Ethylhexyl 2-Cyano-3,3-diphenylacrylate) is a synthetic ultraviolet (UV) filter widely used in cosmetic formulations for its exceptional ability to absorb both UVA (320–400 nm) and UVB (290–320 nm) rays. Derived from cyanoacrylate chemistry, it acts as a photostable organic compound, converting UV energy into heat to prevent skin damage. As a key ingredient in broad-spectrum sunscreens, Octocrylene is valued for its solubility in oil-based systems, compatibility with other filters, and role in enhancing the stability of sunscreen formulations. Backed by global regulatory approvals, it balances efficacy with sensory appeal in lotions, creams, and sprays.