The glossy, durable finish of a gel nail manicure is one of life’s small joys, but the cosmetic treatment has come under scrutiny in recent years. In 2023, a study suggested that the ultraviolet light ...
Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide, commonly known as TPO, is a photoinitiator. Under ultraviolet (UV) light, it releases radicals that can go on to facilitate polymerization reactions.