Hair regrowth research is drawing attention to both traditional remedies and laboratory discoveries, with recent reviews and animal studies suggesting new pathways to stimulate follicles.
A review led by Han bixian and published in the Journal of Holistic Integrative Pharmacy highlights Polygonum multiflorum, a root used in Chinese medicine for more than a millennium.
The review reports the herb may act on several targets, reducing dihydrotestosterone effects, preventing premature follicle cell death, and enhancing Wnt and Shh regeneration signals.
Researchers also report that Polygonum multiflorum may improve scalp circulation, and the review stresses that traditional processing affects safety and biological activity.
The authors caution that much evidence comes from laboratory work, historical records, and limited clinical observations, and they call for larger human trials to confirm efficacy and safety.
Separately, a study reported in Frontiers in Pharmacology found deoxyribose sugar stimulated blood vessel formation and hair regrowth in mice subjected to testosterone-based balding simulations, as reported by Sheila MacNeil and Muhammed Yar.
Those researchers said the sugar performed similarly to minoxidil in their models, and they emphasized the work remains early stage and requires further investigation.
Established Treatments And Clinical Guidance
Clinical overviews and experts advise earlier treatment for pattern hair loss to preserve follicle function and improve outcomes, according to Harvard Health guidance.
Harvard Health lists topical minoxidil as an FDA approved treatment that increases scalp blood flow and requires daily use for months for visible results.
The same source describes oral minoxidil as an alternative for those with scalp irritation, but it can cause increased body hair, low blood pressure, or heart palpitations.
Finasteride reduces DHT and often stabilizes or improves hair density, but the drug can produce sexual side effects, a concern noted across several reports.
Harvard Health also details other options, including spironolactone and dutasteride, platelet rich plasma injections with costs reported between $500 and $1,500, and low level laser therapy devices for home use.
Dermatologist Elizabeth Gordon Spratt at University Hospitals cautions supplements lack strong evidence, noting biotin is ineffective and collagen evidence remains inconclusive.
Across sources, experts emphasize consistency, safety monitoring, and professional guidance, and they note that once follicles stop working, transplant surgery is the remaining option.
