Optical properties are among the most fascinating and useful properties of nanomaterials and have been extensively studied using a variety of optical spectroscopic techniques. New nano-pigment reflecting powders, providing a broad spectrum protection against UV–visible radiation, are more acceptable from the cosmetic viewpoint because they are flesh-toned and turn invisible when applied. UV–Vis diffuse reflectance spectroscopy (DRS) was used for evaluating the optical responses and the determination of band gap of the powder samples using the following relational expression: