Hair, skin & collagen

Temporary hair shedding during rapid weight loss is a commonly reported and much-discussed experience in GLP-1 communities. Biotin, collagen peptides, and hair-skin-nails formulas are the products people most often try during this phase.

Current Amazon listings are ranked below by price per serving. Collagen is usually a powder measured in scoops; biotin is typically a small capsule — so per-serving prices span a wide range. If shedding is significant, it is worth raising with your clinician, since protein intake and overall nutrition often matter here too.

Prices refreshed as of Jul 15, 2026, 11:26 PM ET.