Biotin has earned a reputation as the “it” supplement if you’re looking to grow out your hair or strengthen your nails — though surprisingly, there’s very little clinical research behind its supposed beauty benefits. But we do know about the B vitamin might very well surprise you... (Special thanks to Dermatologist Annie Chiu)

We have natural collagen to thank for our skin’s resilience and firmness… or lack thereof. Collagen depletes as we age, but can applying it topically — or even ingesting it — make a difference in the quality of your skin? Let’s find out! (Special thanks to Dermatologist Melanie Palm)

The skin benefits of sulfur are often overshadowed by its rather... stinky reputation. But we suspect you’ll quickly get over the smell when you learn what this ingredient can do to help fight acne. (Special thanks to Dermatologist Corey L. Hartman)

This week, we're exploring an ingredient with a storied past — and a promising future. Turmeric is spiked with curcumin, an antioxidant that helps protect skin from damaging free radicals. It can also treat inflammatory conditions like rosacea and eczema, which is why you'll often find turmeric in calming lotions and serums. Listen in, then shop our turmeric-infused favorites here: https://www.allure.com/gallery/turmeric-based-skin-care-products (Special thanks to Dermatologist Kavita Mariwalla)

For our debut episode, we're setting the record straight on one of the most polarizing ingredients out there: cannabidiol, also known as CBD. While there's a lot we still don't know about what it can do for your skin — because neither do scientists and researchers — there are some widely-agreed upon rules of thumb to keep in mind when buying a CBD-infused product. Here's a list of Allure editors' favorites to get you started: https://www.allure.com/gallery/weed-laced-beauty-products (Special thanks to cosmetic chemist Krupa Koestline)

Ever pick up a jar of moisturizer, slather it over every inch of your face, then look at the ingredients list and realize...you have absolutely no idea what's actually inside that jar? Or, if it’s going to do anything at all for your skin? Allure’s senior beauty editor Dianna Mazzone hosts The Inside Story, a new miniseries from the producers of Allure’s The Science of Beauty podcast that cuts through marketing language and glittering claims to dissect the why, how, and what’s-in-it-for-me of some of the buzziest ingredients in beauty. And, since knowledge is power, you’ll walk away with all the tools you need to make the best choices for you and your beauty routine. Join us on Tuesdays to get The Inside Story.

There are the face masks you wear when you have to go outside in a pandemic. And then there are the face masks you wear when you're safely inside (preferably with an episode of Bridgerton queued up) and in the mood to give your skin a little TLC. Since this is a podcast by Allure, our episode is all about the latter kind. With the help of dermatologist David Kim, Michelle and Jenny break down the many types of masks on the market (sheet, clay, mud, charcoal, you name it) and test out a tightening treatment that makes your skin look terrifying — and then absolutely amazing.

Don’t miss out on new episodes of Allure: The Science of Beauty on Apple Podcasts, Spotify, or wherever you listen to podcasts.

This episode of Allure: The Science of Beauty is presented by AHC. Head over to @ahc.global on Instagram for an exciting opportunity to try out the NEW Mini Essential Real Eye Cream for Face: https://www.instagram.com/p/CLcBBfYg6Xi/

Do you hear a humming noise? You should, because running a humidifier is just one of the many ways you can help keep your skin happy and hydrated all winter long. Of course, there are tons of topical options too, but it's not as simple as slathering on the thickest cream you can find and saying a prayer. That's why Michelle and Jenny tapped Christine Lee, a senior research and development manager with AHC (Korea's #1 skin-care brand), and dermatologist Claire Chang to share why hydration is the key to "chok chok" skin (don't worry, we'll explain), and the best ingredients to achieve it.

Don’t miss out on new episodes of Allure: The Science of Beauty on Apple Podcasts, Spotify, or wherever you listen to podcasts.

This episode of Allure: The Science of Beauty is presented by AHC. Head over to @ahc.global on Instagram for an exciting opportunity to try out the NEW Mini Essential Real Eye Cream for Face: https://www.instagram.com/p/CLcBBfYg6Xi/

Whether you’re assembling a rainbow cake or putting together a skin-care routine, proper layering is essential. And the multistep regimens that have become synonymous with K-beauty (we're talking 10, 12, and even 17 steps) have turned the way we apply serum, moisturizer, and oil into an art form. To master it, Michelle and Jenny called upon dermatologist Marie Jhin to share some hard-and-fast rules for layering and to spell out exactly how — and when — to apply your skin-care products for maximum benefit.

Don’t miss out on new episodes of Allure: The Science of Beauty on Apple Podcasts, Spotify, or wherever you listen to podcasts.

This episode of Allure: The Science of Beauty is presented by AHC.

What's better than dedicating one episode of The Science of Beauty to all things K-beauty? Well, dedicating three of 'em, that's what! For the next several weeks, hosts Michelle Lee, editor in chief, and Jenny Bailly, executive beauty director, are taking a deep dive into some of the most important facets of Korean skin care, including layering, hydration, and masking. Along the way, you'll learn practical tips (yes, face oil should be the last product you apply at night) and next-level terms like transepidermal water loss. (You're about to become the unofficial skin-care expert in your group chat.) So grab the nearest sheet mask, then press play on this little preview.