November 2014 in “The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology” Most participants had dry skin and scalp issues, needing more research.
Low-temperature extracts of black beans, peony, and green tea improve scalp health and are better than traditional hot-water extracts.
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October 2003 in “PTR. Phytotherapy research/Phytotherapy research” Natural products in cosmetics are beneficial for skin and hair care with low toxicity.
A hat with sensors can measure scalp moisture well, helping with hair care.
April 2023 in “Acta Poloniae Pharmaceutica” Herbal extract shampoo increased certain minerals in hair and improved hair growth and scalp health.