Giving mice a supplement made from bird feathers helps their hair become thicker, smoother, and healthier. This happens because the supplement adds important building blocks to the hair, keeping it moisturized and strong instead of just making it grow faster.

Applying or taking collagen peptides made from bird feathers appears to make human scalp cells that control hair growth multiply faster, which could help stimulate new hair growth.

Using collagen peptides from bird feathers helps human hair follicles grow longer and form new hair strands in the lab, and in mice, it speeds up the hair growth cycle, leading to faster and more noticeable hair growth.

Avian plumage collagen peptides may help promote hair growth by stimulating the cells responsible for hair follicles. These peptides trigger the cells to release growth-promoting proteins and activate internal cellular pathways that encourage hair follicle health and cycling.