Topical Collagen WHAT IS TOPICAL COLLAGEN? COLLAGEN supplements have enjoyed a meteoric rise in popularity over the last decade and are now considered one of the most important anti-aging nutrients around. Indeed, today collagen is sold both in isolated form as a supplement, and added to a wide range of beauty products for hair, skin, & nail health. https://www.nationalnutrition.ca/collagen/topical-collagen.html #nationalnutrition #topicalcollagen