| abstract |
Hydroxy salts of the formula [M(OH)2-a)]a+ X b- a/b . zH2O, where M is zinc, copper or a mixture of the two and X denotes anions at least some of which display ultraviolet absorption over at least a portion o f the wavelength range from 290 to 400 nanometres, their use as sunscreen agents and sunscreen compositions comprising them together with a cosmetically acceptable vehicle. |