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December 2022 in “Clinical, Cosmetic and Investigational Dermatology” Midscalp hair density and terminal hair percentage are good indicators of female pattern hair loss severity.
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January 2018 in “Biomolecules & therapeutics” Polyamidoamine dendrimers can change the strength and direction of electroosmotic flow through the skin, affecting drug delivery.
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May 2001 in “PubMed” Different thicknesses of hair strands can indicate the severity of hair thinning.
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September 2012 in “Dermatologic Surgery” The conclusion is that normal scalp hair counts for Taiwanese people were established, showing age-related differences but not sex or scalp location differences.
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October 2021 in “Journal of Investigative Dermatology” The study concluded that the developed models are effective for studying hair growth mechanisms and testing new treatments.
August 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” Mouse touch-sensitive nerve cells adjust their connections based on competition with other similar cells.
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December 2022 in “JEADV Clinical Practice” Hair density and thickness decrease in specific scalp areas in people with androgenetic alopecia.
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January 2025 in “动物学研究” The gene GJA1 is important for regulating coarse hair density in goats.
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July 1999 in “Journal of Anatomy” Methylene blue staining effectively highlights detailed nerve structures in rat fur.
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November 2025 in “Journal of Investigative Dermatology” Certain immune cells in atopic dermatitis skin could be targeted for treatment.
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November 2004 in “Brain Behavior and Immunity” Stress increases nerve fibers and immune cell activity in mouse skin, possibly worsening skin conditions.
April 2025 in “British Journal of Dermatology” Age, sex, BMI, menopause, and specific genes affect hair density in East Asians.
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December 2017 in “Skin Appendage Disorders” Caucasians have the highest hair density, followed by Hispanics, with the lowest in individuals of African descent.
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July 1999 in “Journal of Anatomy” Methylene blue staining effectively reveals detailed nerve structures in rat snouts.
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May 2007 in “Archives of dermatological research” Diphencyprone treatment increases CD8 lymphocytes in the scalp, which is associated with hair regrowth in alopecia areata patients.
June 2024 in “Nature Cell and Science” The Scalp Coverage Scoring method reliably measures hair density from images.
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November 2013 in “European Journal of Dermatology” Hair gets thinner and grayer with age, and density decreases more in men on top and in women on top and back.
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January 2004 in “Annals of Dermatology” People with androgenetic alopecia (AGA) have lower hair density and more single-hair units compared to those with normal scalps.
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January 2010 in “PubMed” Scalp psoriasis is linked to impaired hair growth with more hair in the resting phase.
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February 2023 in “Siriraj Medical Journal/San Sirirat” Thai males with hair loss have lower hair density in the occipital scalp compared to other Asians.
July 2024 in “Journal of Investigative Dermatology” Certain substances can help skin cells become anti-inflammatory, aiding in tissue repair.
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January 2014 in “Zhongguo zhongyao zazhi” Dendrobium candidum polysaccharides promote hair growth.
May 2025 in “American Journal of Veterinary Research” Photobiomodulation did not significantly improve hair density in dogs with alopecia X.
March 2017 in “Hair transplant forum international” Asian men have varying hair densities, important for hair transplant success.