What’s in your nail polish?

Certain toxic chemicals — DnBP, toluene, and formaldehyde — that make nail polish easy to apply and hard to chip off have earned such a bad rap that some polish labels now boast their absence with the phrase "3-Free." But a new study from Harvard public health researchers suggests that, in some cases, one of those toxic chemicals is being swapped for another that also can harm reproductive health, fetal development, and thyroid function. Since the FDA and OSHA have little oversight, the authors say "the limited regulation of ingredients in nail polish may leave nail polish users and nail salon workers vulnerable."