A kind of evaluation method of granular pattern physical sunscreen agent ultraviolet protection ability

The present invention is a kind of evaluation method of granular pattern physical sunscreen agent ultraviolet protection ability.By TiO 2 Or ZnO is dispersed in the macromolecular solution with certain viscosity on the premise of not occurring coagulation, and its absorbance is determined by reference reagent of this decentralized medium.This method is easy to operate, favorable reproducibility, has good linear relationship between concentration and absorbance.Dispersed measuring principle can be used for the measure of other insoluble granule absorbances in media as well, the ultraviolet absorptivity for being applied to physical sunscreen agent in suncream is determined, measurement result of the acquired results with sun-screening agent in itself is consistent, can provide experimental basis for the true and accurate design of sunscreen composition.