Can a beauty pill thicken your hair? study investigates
Symptom relief
Completed
This study tested whether a daily dietary supplement containing biotin, collagen, and keratin could improve hair thickness and strength in adults who feel their hair is thinning. For three months, 80 participants aged 21-50 took either the supplement or a placebo pill. Researcher…
Phase: NA • Sponsor: Nutra Harmony LLC • Aim: Symptom relief
Last updated Mar 31, 2026 12:12 UTC