Science Daily · Feb 9, 2026 · Collected from RSS
A centuries-old Chinese medicinal root is getting new scientific attention as a potential game-changer for common hair loss. Polygonum multiflorum, long believed to restore dark, healthy hair, appears to work on multiple fronts at once—blocking hair-shrinking hormones, protecting follicles from damage, activating natural regrowth signals, and boosting blood flow to the scalp.
Androgenetic alopecia (AGA) is the most widespread form of hair loss, affecting millions of people around the world. Medications such as finasteride and minoxidil are widely prescribed, but concerns about side effects and long term use have pushed many patients to look for gentler, more holistic approaches. A new scientific review suggests that Polygonum multiflorum, a root used in traditional Chinese medicine for more than a thousand years to "blacken hair and nourish essence," could be a promising alternative for managing AGA. Most standard hair loss treatments are designed to act on a single biological pathway. Polygonum multiflorum appears to work differently. According to the review, the herb influences several processes at the same time. It helps reduce the effects of dihydrotestosterone, a hormone linked to follicle shrinkage, while also protecting hair follicle cells from premature cell death. In addition, it activates key growth related signaling systems such as Wnt and Shh and improves blood circulation in the scalp, which may enhance the delivery of oxygen and nutrients to hair follicles. Ancient Records Meet Modern Biology "Our analysis bridges ancient wisdom and modern science," said Han bixian, the first author of the review published in the Journal of Holistic Integrative Pharmacy. "What surprised us was how consistently historical texts -- from the Tang Dynasty onward -- described effects that align perfectly with today's understanding of hair biology. Modern studies now confirm that this isn't folklore; it's pharmacology." The researchers examined a wide range of sources, including laboratory experiments, clinical observations, and historical herbal writings. Together, these sources paint a picture of a treatment that does more than slow hair thinning. More Than Slowing Hair Loss The review emphasizes that Polygonum multiflorum may actively support hair regeneration. Rather than simply delaying further loss, the herb appears to encourage regrowth by influencing multiple growth factors and signaling pathways involved in the hair cycle. This broad mode of action could make it more effective than treatments that focus on only one biological target. Safety and the Need for Further Research "When properly processed -- a key step in traditional preparation -- the herb shows a favorable safety profile, making it more acceptable to patients wary of side effects like sexual dysfunction or scalp irritation linked to current medications," This article highlights. The authors caution that more high quality clinical trials are necessary to confirm these findings and determine optimal use. Even so, the review highlights how careful scientific study of traditional remedies can open the door to new treatment strategies for common conditions such as androgenetic alopecia.