Abstract

Solar radiation has played a key part in the evolution of human beings. Vitamin D, whose synthesis is related to exposure to solar radiation, is vital for the development of human bone. On the other hand, melanin is our natural sunscreen as it is capable of physically and chemically filtering the detrimental effects of UV radiation; it absorbs UV rays, making them lose energy, and neutralizes the chemical products (free radicals) that form in the skin after exposure to the harmful effects of the sun.
Although our organism contains intrinsic photoprotection control mechanisms, we learn more every day about the adverse effects of solar radiation on our skin, visible (erythema) as well as invisible (photo immunosuppression, photo carcinogenesis, photo ageing); the latter are initially hidden reactions with harmful consequences for our health.
The current challenge and the future of the development of new sunscreen products, lies in the incorporation of highly effective protection factors in their formulation, offering protection not only from UVB rays (which cause redness) and UVA rays (responsible for cellular ageing), but from the entire spectrum of ultraviolet radiation, which is known as spectral homeostasis.
Furthermore, the industry is dealing with consumers who are better informed and more demanding, who are looking for effective products that can satisfy their needs. The incorporation of innovation in the development of photoprotectors is changing the trend that the greatest percentage of sales of this type of products is recorded in summer and is converting them into a basic need, as more people use sun protection all year round.

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