Collagen, a protein best known for plumping and smoothing skin, now has a secondary use: a health ingredient in food and drink, including in protein bars and smoothies. After years of steady search interest, interest for collagen has rapidly increased this year.  

Next steps: The increasing popularity of collagen highlights the growing intersection of food and beauty. Ingredients associated with cosmetics are being used in foods, such as activated charcoal in drinks. And food ingredients are being used in cosmetics, such as oat milk shampoo and matcha antioxidant masks.