It’s not just GLP-1s. There’s a new daily injection that celebrities and Silicon Valley can’t live without.

Collagen supplements and powders are making their way into coffee, smoothies, and more based on the belief that they promote healthy skin, joints, and maybe even weight loss. See what experts think.

TB-500, and copper peptide to build muscle, rejuvenate skin, and boost longevity. But do they work and are they safe?