Browse any supplement or beauty aisle and you’ll find collagen peppered in gummies, tonics, the aforementioned bottled water, pills, and powders. Depending on said format, you’ll get a wide variance on dosage—so if you’re using an option that only contains a sprinkle of collagen, you may not see the desired results. (And perhaps even write off collagen as a supplement not worth using.) If you’re curious, here’s our deep dive into proper collagen dosage, as there’s a bit of nuance involved. But as a recap we recommend the following depending on why you’re taking it: