Can a protein powder give you stronger, shinier hair?
Symptom relief
Completed
This study tested whether a daily keratin protein powder could improve hair and scalp health. For 24 weeks, 120 adults with mild hair damage took either the keratin powder or a placebo. Researchers measured changes in hair strength, shine, thickness, and scalp moisture to see if …
Phase: NA • Sponsor: Dong-A Pharmaceutical • Aim: Symptom relief
Last updated Mar 23, 2026 15:18 UTC