Collagen is one of the most talked-about ingredients in skincare and for good reason. As the most abundant protein in our skin, collagen provides structure, firmness, and smoothness. But starting in our mid-20s, natural collagen production gradually slows, contributing to fine lines, loss of elasticity, and a more uneven texture. This is why collagen-focused skincare has become so popular. One common question, though, is whether topical collagen (collagen applied on the skin