The three most offensive nail color ingredients are phthalates, solvents and formaldehyde.  Most brands on nail polish also contain questionable dyes, synthetic preservatives and fragrances. 

Use an organic nail  polish that is completely  FREE of:

• phthalates
• formaldehyde
• solvents  
• Rosins
• Toluene
• FD&C colors
• synthetic preservatives
• synthetic fragrances
• parabens (present in the varnish)

For a polish remover, use an organic polish remover that contains acetate solvents, non-toxic, and non-carcinogenic ingredients. It should not incorporate either phthalates, phthalic anhydride, or petroleum ingredients.

Some Doctors caution the use of traditional nail polish and nail polish remover, while pregnant or nursing.  Make sure to check nail polish labels for the worst offending chemicals.