Sulisobenzone (benzophenone-4) is an ingredient in some

sunscreen Sunscreen, also known as sunblock, sun lotion or sun cream, is a photoprotection, photoprotective topical product for the Human skin, skin that helps protect against sunburn and prevent skin cancer. Sunscreens come as lotions, sprays, gels, fo ...

s which protects the skin from damage by UVB and UVA

ultraviolet light Ultraviolet radiation, also known as simply UV, is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight and constitutes about 10% of th ...

.Skin cancer foundation: Understanding UVA and UVB
/ref> Its

sodium Sodium is a chemical element; it has Symbol (chemistry), symbol Na (from Neo-Latin ) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 element, group 1 of the peri ...

salt, sulisobenzone sodium, is also referred to as benzophenone-5.

References

Benzenesulfonic acids Sunscreening agents Phenols Phenol ethers Benzophenones {{ketone-stub