Celebrities may be beautiful and well-spoken, but they’re not health and beauty experts. A recent report from the non-profit organization Sense About Science discovered that many celebrities are repeating medical and cosmetic advice that is based in fiction, not fact.

It’s fun to hear what stars have to say about their beauty and health regimens. After all, they’re famous and alluring-we want to hear what tricks they’ve got up their sleeves! But it’s important to be aware that their advice may not be medically sound. From royal sister Pippa Middleton’s comment about using a cold rinse to “close the pores” of her hair and “give it a lift and shine” (hair doesn’t have pores!) to actress Juliette Lewis’s assertion that “coconut water is pretty much the most hydrating thing you can drink” (try water!) to supermodel Gisele Bundchen’s vehement hatred of “synthetic” sunscreens (even though they are rigorously tested and safe), these ladies are full of well-meaning quips for healthier lifestyles-but they’re not exactly authorities on these topics.

Before you take their advice, make sure you verify the accuracy of their recommendations with someone who is truly knowledgeable about integrative health and beauty–Dr. Michelle Yagoda, a Facial Plastic Surgeon, ENT, and co-creator of BeautyScoop. Here’s to a year of beauty and wellness!