2 citations
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September 2010 in “Journal of the Korea Academia-Industrial cooperation Society” This study found that increasing collagen concentration to 2% in permanent wave treatments reduced hair damage but impaired curl formation.
March 2024 in “Medical lasers” Multiple-wavelength radiation helps hair grow by boosting early hair follicle development.
127 citations
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December 2007 in “Journal of Investigative Dermatology” This review examines regenerative hair waves and complex hair cycle domains in transgenic mice, highlighting how these dynamic processes contribute to skin regeneration and the physiological regulation of organs, but reports no new experimental results.
88 citations
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April 2011 in “Archives of Dermatology” This study found a high prevalence of central hair loss among African American women and associated it with diabetes mellitus type 2, bacterial scalp infections, and hairstyles causing traction.
5 citations
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July 2016 in “Experimental Dermatology” This article reviews the limitations in current research on photobiomodulation for hair regrowth and suggests that optimal wavelengths and dosing have not yet been identified, noting that recommending these devices may be premature.