EFFECTIVENESS OF SOME ORGANIC AND INORGANIC AGENTS IN PREVENTING UVB

Abstract

Skincare products for protecting against ultraviolet radiation are always of interest to limit the aging effects of sunlight on the skin, especially nowadays consumers tend to look for products with natural origin. In this study, the ability of some organic and inorganic substances to block UVB was analyzed and evaluated through their transmittance spectra at the excitation wavelength range of 250 nm-400 nm. Seed oils such as almond oil and flaxseed oil are known to contain many skin-beneficial fatty acids that have been studied for their sun protection properties. Herbal powders such as turmeric powder, green tea powder, and Chinese medicine powder (Angelica Dahurica powder, Atractylodes Macrocephala Extract powder, Atractylodes Macrocephala Extract powder) with good antioxidant properties were also investigated. Besides, two oxides known for their good sun protection, TiO₂ and ZnO, were also included in the research for comparison. The research aims to find suitable materials for developing products that combine sun protection and skin care. The results show that the seed oils such as flaxseed oil and almond oil block UV radiation worse than herbal powder samples. Among the powder samples, Chinese medicine powder shows the best sun blocking ability, with the highest SPF index, equivalent to the sun blocking ability of inorganic TiO₂.ZnO powders. This shows the potential of using Chinese medicine powder in developing products that combine sun protection and skincare.