This piece originally appeared on InStyle.com.
Beauty supplements are gaining a lot of buzz these days and for good reason—with promises of glowing skin, gorgeous hair, and stronger nails everywhere you turn, it’s impossible not to be intrigued. But just how effective are these power pills and more importantly, do you really need to take them? Before you pick up a bottle, we spoke to an expert on everything you should know.
Do your research.
Unfortunately, not all beauty supplements are created equal. If the claims sound too good to be true, they probably are. “Studies show that many supplements contain only a fraction of what the label claims is included, so be sure you find a reputable supplement,” dietician Amanda Foti of Selvera tells InStyle. Know what you're ingesting and check to see that it’s NSF certified, which ensures the supplement doesn’t contain harmful contaminants (read more on supplement safety at nfs.org).