17 citations
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August 1979 in “Journal of The American Academy of Dermatology” This study found that a histochemical stain using 4-dimethyl-aminocinnamaldehyde effectively distinguishes between plucked anagen and telogen hairs by causing the root ends of anagen hairs to develop a red color.
35 citations
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March 2007 in “Skin Research and Technology” In this study, researchers developed a non-invasive method to distinguish exogen hair from telogen hair on the human scalp, finding that normal exogen hair levels are generally less than seven hairs per cm².
1 citations
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June 2025 in “Environmental Research” In this study, researchers reported that adult females approaching menopause in Canada generally had similar or lower blood concentrations of toxic, essential, and trace elements compared to their peers, but most participants showed zinc levels below the proposed adequacy threshold.
126 citations
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January 1987 in “Journal of The American Academy of Dermatology” This article reviews the classification of hair shaft abnormalities, outlining their diagnostic features, but does not present new research findings.
10 citations
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June 2000 in “Primary Care” This article reviews common hair disorders and their normal anatomy and life cycle, but reports no new research findings.