For over a thousand years, traditional Chinese medicine practitioners have prescribed Polygonum multiflorum — known by its Chinese name He Shou Wu — for a condition they described as "blackening hair and nourishing essence." Ancient texts from the Tang Dynasty onward consistently documented its effects on hair quality, thickness, and growth. For most of that millennium, Western science viewed those claims skeptically, if it considered them at all.
That skepticism is now being systematically dismantled. A major new scientific review published in the Journal of Holistic Integrative Pharmacy in June 2026 synthesizes the full body of laboratory and clinical research on Polygonum multiflorum's effects on hair biology — and concludes that the herb doesn't just work, it works through four distinct biological pathways simultaneously, addressing hair loss in ways that no single existing pharmaceutical does.
