Sunscreens and photoprotection compounds - a review

Abstract

Excessive exposure to the sun without protection represents a major risk for the development of malignant tumors. Substances for protecting the skin, such as sunscreens has the attention of the market. The development of effective and safe sunscreen, is obtained through knowledge of their mechanisms of action and formulations. Sunscreens, besides protect against ultraviolet radiation, can hydrate and rejuvenate the skin. We are presenting a literature review about sunscreens and the phenomena involving photo protection, submit ratings, mechanism of action and the assessment methods of sun protection, and finally highlight the importance of using of sunscreen in preventing photoaging and skin cancer. It is noteworthy that the use of combinations of filters as organic with inorganic compounds can increase the spectrum of protection, allowing higher FPS with reduced cost and power irritant reactions. The combination of zinc oxide with titanium dioxide allows the obtention of formulations with low irritant and allergenic potential and they may be used by sensitive individuals. These combinations represent the advancement of technology and possibilities for new products to market safely.