As we age and are exposed to the sun, pollution and other lifestyle factors, our skin's collagen and elastin production (A.K.A. its support structure) slowly declines, leading to fine lines and wrinkles. While the specific ingredients and their strengths will vary based on the severity of your fine lines, the most common include daily SPF, retinoids, AHAs, peptides, hyaluronic acid, ceramides and vitamin C.