In-vivo Studies of Cosmetics with Ultraviolet Light Filter and Synergistic Antioxidant Care

Abstract

The natural process of skin melanogenesis is an evolutionarily valuable mechanism that protects the human body against excessive exposure to solar radiation. Cosmetics with a filter are a very important invention of the cosmetics industry, which enable protection of the skin against excessive exposure to solar radiation, thanks to which people with dysfunction of natural photochromia or people traveling to distant parts of the world can support it by protecting the body against the destructive effects of UV radiation. Cosmetics with a filter effectively protect against premature photo-aging and the formation of skin cancer. With the development of cosmetic formula technology, the discovery of new safe sunscreen substances and the evolution of marketing labels declaring the degree of photoprotection, the role of solar radiation, in which we have evolved since the emergence of Homo sapiens, began to be demonized. Taking into account the benefits of additional photoprotection provided by cosmetics with a high SPF factor, the properties and secondary effects of a cosmetic emulsion having direct contact with the hydrolipid barrier and the possibility of interfering with the physiology of the epidermis should also be taken into account. Both the benefits and side effects caused by excessive application should be balanced in terms of interference with the pH value of the epidermis and the role of the natural melanogenesis process as an essential phenomenon of skin photoprotection. When developing the method of use of a given cosmetic with a filter, you should also take into account the SPF factor and its protection range, the pH value of the emulsion and additional functions – antioxidant. Generalizing the method of use and frequency of application of photoprotective cosmetics, without personalizing the recommendations, seems to be an abuse in today’s cosmetic product technology to the detriment of the cosmetics industry and dermatology. To sum up, the authors wanted to present both the advantages and disadvantages of excessive use of creams containing filters.