phthalates which are found in many nail polishes have been studied for a potential risk of causing birth defects. however evidence does not currently suggest a connection between phthalates and birth defects in humans. but studies in animals have shown these substances interfere with male sexual development so caution may be warranted. to be on the safe side you can use phthalate-free nail polish. or polish your nails in a well-ventilated area to limit your exposure. once the polish dries there's little risk to your baby since chemicals aren't absorbed through the nails. here's a great article on pregnancy-proofing your beauty regimen.
is it safe to use nail polish while pregnant