September 2023 in “Cells tissues organs” Mice skin matures by day 200, leading to aging signs like curved hair follicles and white hairs due to changes in skin stem cells.
August 1994 in “Journal of Dermatological Science” Gray hair affects hair's movement and appearance, making it less bouncy and more wavy.
23 citations
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December 1991 in “Annals of the New York Academy of Sciences” Balding scalps slow down hair growth.
31 citations
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November 2016 in “Cell Reports” Touch sensitivity in mouse skin decreases during hair growth due to changes in touch receptors.
6 citations
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January 2017 in “Journal of toxicologic pathology” Rabbit skin with active hair growth shows thicker, redder areas due to larger, more numerous hair follicles and increased blood vessels.
July 2011 in “F1000Research”
9 citations
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June 2014 in “British Journal of Dermatology” The study found that balding scalps have more thin hairs and larger oil glands, which might contribute to skin conditions related to hair loss.
13 citations
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January 2001 in “Pediatric dermatology” A dark-haired Chinese girl had hair that looked banded under certain light but was normal under a microscope.
61 citations
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April 2012 in “British Journal of Dermatology” Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.
2 citations
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October 2017 in “Journal of The American Academy of Dermatology” Focal atrichia helps diagnose female pattern hair loss.
170 citations
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January 2010 in “animal” Hair follicle growth and fiber production in animals are influenced by chemical signals, proteins, pigmentation, genetics, and nutrients.
February 2009 in “Journal of The American Academy of Dermatology” Female hair loss can be diagnosed using specific trichoscopy criteria.
11 citations
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January 1981 in “Cells Tissues Organs” Human hair cuticle has five cell layers with specific junctions and granules.
April 2022 in “Journal of Investigative Dermatology” Hair shaft miniaturization leads to hair follicle stem cell loss, suggesting Piezo1 as a potential treatment target.
24 citations
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November 1978 in “Biochemistry” α-type filaments in guinea pig hair follicles have unique structural features.
15 citations
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January 1988 Hair follicles have unique proteins that vary by species and are influenced by nutrition.
September 1989 in “PubMed” The method allows detailed observation of hair tissue structures.
30 citations
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May 2010 in “British Journal of Dermatology” Intermediate hair follicles are a better model for studying hair growth and testing hair loss treatments.
116 citations
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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.
January 2001 in “Biomedical Research” THH and PAD type III appear together early in hair growth, but deiminated THH appears later, suggesting another factor is involved.
11 citations
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June 2012 in “Acta histochemica” Mice with a Gsdma3 gene mutation have thicker skin and longer hair follicle openings due to increased β-catenin levels.
2 citations
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April 2023 in “Archives of Aesthetic Plastic Surgery” The phototrichogram is better for measuring hair thickness.
46 citations
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April 2009 in “Journal of Dermatological Case Reports” Researchers established normal hair and scalp characteristics for healthy women using trichoscopy.
50 citations
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March 2001 in “Clinics in dermatology” Human hair is complex and grows in cycles starting from embryonic life.
34 citations
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January 1983 in “Journal of Investigative Dermatology” 3 citations
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January 2021 in “Medicinski arhiv” Trichoscopy, a hair loss evaluation technique, found that people with Androgenetic Alopecia have more thin hairs, yellow dots, and perifollicular discoloration than healthy individuals.
January 2007 in “한국미용학회지” Women without alopecia have more fat tissues and longer hair roots than those with alopecia.
Skin ages and changes due to sun, wind, and aging, causing dryness, thinning, and hair loss.
44 citations
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October 1990 in “Archives of Dermatological Research” The connective tissue around hair follicles changes structure throughout the hair cycle.