33 citations
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July 2007 in “Skin research and technology” Thicker hair is stronger, regardless of age, gender, or other factors.
7 citations
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September 2014 in “European Journal of Dermatology” Thicker hair grows faster; hair loss patients have slower growth.
36 citations
,
September 2011 in “British Journal of Dermatology” White hair grows thicker and faster than black hair due to higher activity of growth-related genes and proteins.
11 citations
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November 2015 in “Skin Research and Technology” Women's hair grows faster and thicker than men's, but hair growth slows for both genders with pattern hair loss.
29 citations
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December 2011 in “British Journal of Dermatology” A new hair treatment with caffeine and other ingredients makes hair thicker and less likely to break.