Benzophenon 4 is a naturally occurring chemical found in some flowering plants BP4 absorbs and scatters the suns harmful ultraviolet UV rays For this reason it is produced for use as sunscreen in lotions conditioners and cosmetics It is a common FDAapproved active ingredient in many sunscreen products By absorbing UV rays it also helps preserve the integrity of other cosmetic ingredients preventing their deterioration under the sun Benzophenon4 is most often used in conjunction with other sunscreen agents Besides sunscreen it can be found in a variety of personal care products such as nail polish lotions and lipstick