The blend also includes amino acid L-glutamine (aka building block for protein), natural moisturizer hyaluronic acid, and essential nutrient vitamin C, which is a vital part of collagen synthesis.* So vital, in fact, that your body can’t adequately produce collagen without it. The formula is also supported by vitamin E, which helps stabilize vitamin C in the body, and both are potent antioxidants.* This ingredient lineup is rounded out by biotin (water-soluble micronutrient to support healthy hair) and a plethora of plant bioactives with antioxidant and anti-inflammatory properties, namely curcumin (via turmeric root) and sulforaphane glucosinolate (SGS).* No wonder this 8-ingredient powerhouse formula is gaining fanfare. Here, some of our favorite reviews.