117 citations,
September 2013 in “Lasers in Surgery and Medicine” Red light therapy at 655 nm significantly improved hair growth in men with hair loss.
117 citations,
August 2005 in “Ultramicroscopy” Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
116 citations,
May 2013 in “Proceedings of the National Academy of Sciences of the United States of America” Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.
116 citations,
September 2001 in “Journal of The American Academy of Dermatology” Hair loss occurs due to fewer papillary cells, smaller follicles, and shorter growth phases.
116 citations,
April 1986 in “The journal of cell biology/The Journal of cell biology” Trichohyalin is a protein in hair follicles that helps form hair filaments.
116 citations,
January 1957 in “Australian Journal of Agricultural Research” Certain hair follicle traits in Merino sheep may be inherited.
115 citations,
September 2012 in “Experimental Dermatology” Androgens have complex effects on hair growth, promoting it in some areas but causing hair loss in others, and our understanding of this is still evolving.
115 citations,
August 2008 in “The Journal of Clinical Endocrinology & Metabolism” Thyroid hormones help hair grow, reduce hair loss, and increase hair pigment.
115 citations,
September 2005 in “International Journal of Dermatology” Different ethnic groups have unique hair growth patterns, with African hair growing slower and less dense, Asian hair growing fast but sparse, and Caucasian hair being densest; men are more likely to experience hair loss than women.
115 citations,
November 1999 in “Journal of The American Academy of Dermatology” Minoxidil increases hair weight and count temporarily in men with hair loss.