Sunscreens are used to prevent skin damage due to sunlight ultraviolet radiation (UVR). These compounds can be obtained from natural solar filters, from nanocompounds and, mainly, from synthetic organic compounds. The production of ideal organic sunscreens is related to a better understanding of safety and efficacy of these compounds. The ideal organic sunscreens must protect the skin against UVB-rays (290-320 nm) and UVA-rays (320-400 nm), also presenting a safe sun protection factor (SPF), have good photostability and do not present phototoxicity. This review reports the main general aspects, synthesis and scientific studies of organic and commercial sunscreens.