Unlike most pharmaceutical medications, products used in manicures, hair and nail products aren’t subject to the same level of scrutiny by the Food and Drug Administration (FDA). The official stance of the FDA regarding these products is that they are allowed on the market if they’re safe to use as the manufacturer intended.
Of course, there are some major ingredients that are limited or prohibited, such as the limitation of the concentration of formaldehyde in nail cosmetics and the prohibition of bithionol, methylene chloride and chlorofluorocarbon propellants. Similarly, some ingredients are allowed in cosmetics under certain restrictions, such as mercury, sunscreen and hexachlorophene.
Basically, cosmetics and nail products don’t undergo the same rigorous clinical trials as medications do before they hit the open market, and salons don’t need to provide detailed disclosure of products unless they’re for sale.
To avoid any major skin conditions from salon treatments, it’s important that clients seek out licensed practitioners, especially when it comes to the operation of laser machines or the application of chemicals. Seeking out cosmetics made from natural and organic sources is also recommended.