You may have pulled out all the stops for optimal nail health, but have you considered this missing piece? Creating a healthy environment for your nails to flourish means tending to them from the inside and the outside. If you’re unsure where to start on the former—keep reading. So it only makes sense that tending to your body’s supply of those keratin-building amino acids would help support nail health as well—and research backs this up. In fact, biotin has been shown to support thickness and firmness of nails2 in several human studies.* One study, in particular, found that those who took biotin supplements had 25% thicker nailbeds3 than the placebo group.* While you can certainly take separate collagen and biotin supplements, why not go for a two-in-one? Our suggestion: The mbg beauty & gut collagen+. This collagen powder not only checks both boxes but also delivers a host of other nutrients and bioactives, including vitamins C and E, L-glutamine, hyaluronic acid, and more.