Best for Mature Skin: First Aid Beauty Firming Cream But if you wanna actually preserve what you have and try to create more collagen, you're gonna have to invest in collagen-boosting skincare, like formulas with retinol, vitamin C, niacinamide, peptides, and AHAs. But if you've already got a lot of collagen in your skin (lucky), maybe you just want a lil boost of hydration, and a formula loaded with collagen and other hydrators like hyaluronic acid will be best for you. We love its lightweigh...