Let’s start with the ingredient of the same name: collagen supplements contain collagen peptides, a broken-down version of a protein that the body uses for a variety of things, from maintaining skin elasticity to keeping joints comfortable.*

(We’ve written quite a bit about how collagen supplements work, so I encourage you to check it out if you haven’t already. Also, there’s been a lot of research on the topic, including this systematic review and meta-analysis1which considered skin aging in particular.)

And while other formulas find this to be enough, we go further by adding seven other active ingredients to further support skin, gut and whole body health.* I find vitamins C and E the most prominent, as antioxidants play a huge role in collagen production.* Vitamin C is a vital part collagen synthesis process2 and prevents collagen from cross-linking (which makes it brittle), while vitamin E helps to “recharge” vitamin C during this process.* And because they are antioxidants, they both have the ability to neutralize free radicals.*

In addition to these, the formula contains the essential B vitamin biotin, hyaluronic acid to support hydration, the gut-central amino acid L-glutamine, and turmeric and sulforaphane glucosinolate (SGS) to fight oxidative stress.*

It’s no wonder we’ve gathered a whole following of this bestseller. “I’ve been a collagen advocate for a few years, but this collagen is so much better than all the other brands on the market. Unlike a lot of other flavorless collagens, it really has no taste. It quickly became a part of my routine, so luckily, there is a monthly subscription option!” says verified buyer Jenna D.

She’s not alone, says verified shopper Joan S., “[I] I love it – I’m on my third round and I couldn’t be happier.”