M.H.
Hi J.,
Chemicals of concern in nail polish are formaldehyde, which can be absorbed through nails and skin, and is thought to be a carcinogen by the EPA and the National Toxicology Program, as well as toluene, which is a skin and respiratory tract irritant. In extreme amounts, it can cause liver damage. If it can absorb into the skin, then it can get into the bloodstream. There are non-toxic nail polishes. I also refer to www.cosmeticsdatabase.com for information.
M.