For the formation of vitamin D, it is absolutely necessary that UV-B rays reach the skin. Therefore, it is easy to understand that, just like a dark skin type, the use of sunscreen also reduces the formation of vitamin D in the skin. This is because sunscreen prevents a large part of the UV-B rays needed for the formation of vitamin D from reaching the skin cells. The UV-B radiation of the sun can have both positive (vitamin D synthesis) and negative effects on health. Humans do not have an early warning system that could warn them of UV damage (sunburn). The use of sunscreen is an integral part of the recommendations of numerous professional societies for skin cancer prevention. However, certain UV filter substances contained in sunscreens can endanger health and the environment. Because certain UV filter substances