research Impact of Testosterone on Hair and Skin 4 citations, January 2015 in “Endocrinology & metabolic syndrome” Testosterone can cause acne and male-pattern baldness, affects hair growth in men and women, and makes male skin more sensitive.
research Formulation and Test Activities of Hair Tonic with a Combination of the Aqueous Extracts of Aloe Vera (Aloe Vera L.) and Licorice (Glycyrrhiza Glabra L.) 1 citations, June 2018 in “Pharmaciana” The hair tonic with 15% ethanol effectively promotes hair growth.