Is Polygonum good for skin?
Polygonum Multiflorum Extract is generally regarded as a safe ingredient when used in lower concentrations. However, a patch test is highly recommended for sensitive skin since allergic reactions like rashes and itching have been documented. Polygonum multiflorum is an herb native to China, extracts of which has been used for centuries as a treatment for a wide range of conditions including backache, dizziness, liver disease, graying of the hair and constipation.The number of reports on the adverse effects of Polygonum multiflorum has recently increased. Some researchers have found that Polygonum multiflorum shows not only hepatotoxicity and kidney toxicity, particularly in long-term use, but also a possible drug interaction with warfarin to result in bone marrow suppression.Abstract. Polygonum multiflorum is a traditional Chinese medicine with a long history in hair growth promotion and hair blackening.A large amount of evidence has demonstrated that Polygonatum and its active ingre- dients have various pharmacological effects, such as antioxidant properties [12], anti-aging effects [13], immunomodulatory effects [14], antibacterial and anti-inflammatory activities [15, 16].