February 2026 in “Cureus” Two methods reliably measure scalp area and hair count.
90 citations
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October 1983 in “British Journal of Dermatology” The unit area trichogram is a reliable method to assess hair loss and treatment response in people with androgenic alopecia by measuring hair density and thickness.
10 citations
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January 2019 in “Journal of Chromatography B” Researchers developed a reliable way to measure hormones in urine, showing that a baldness treatment doesn't change hormone levels.
26 citations
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March 1986 in “Clinical and Experimental Dermatology” Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.
35 citations
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October 2015 in “International Journal of Pharmaceutics” Tiny particles carrying roxithromycin can effectively target and deliver the drug to hair follicles without irritation.