Patent ID: 7713519

Claim:
A photostabilized photoactive sunscreen composition comprising a mixture of a photon-excited photoactive compound that reaches a singlet excited state when exposed to UV radiation and a compound of formula (I) in an amount sufficient to accept the singlet excited state energy from said photoactive compound to quench the singlet excited state energy from the photon-excited photoactive compound and transfer the singlet excited state energy from the photon-excited photoactive compound to the compound of formula (I) thereby returning the photon-excited photoactive compound to its ground state so that the photon-excited photoactive compound can absorb more photons from UV radiation before it undergoes a photochemical reaction destructive to its UV-absorbing capability, thereby photostabilizing said photoactive compound: wherein one of R 1 and R 2 is a straight or branched chain C 1 -C 30 alkoxy radical, and the other R 1 or R 2 is hydrogen; and R 3 is a straight or branched chain C 1 -C 30 alkyl radical.