November 2024 in “Psychoneuroendocrinology” Testosterone increases hair testosterone levels, stress raises hair cortisol, and relationship status affects hormone levels.
January 2023 in “Advances in pharmacology and clinical trials” Human hair is a significant sample for various tests in clinical, nutritional, archaeological, and forensic studies.
June 2014 in “Toxicologie analytique et clinique/Annales de toxicologie analytique” Hair analysis can be unreliable due to external contamination and varying drug concentrations.
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.
162 citations
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August 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” The new "differential stripping" method effectively measures how much substance gets into hair follicles.
161 citations
,
June 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair stops producing melanin as it transitions from the growth phase to the resting phase.
121 citations
,
January 1991 in “Acta dermato-venereologica” Terbinafine quickly builds up in skin and hair, staying effective for over 3 weeks.
110 citations
,
September 1999 in “British Journal of Dermatology” Female hair loss can occur without androgens.
44 citations
,
August 1990 in “PubMed” Keratins K1 and K10 are found in the inner root sheath and cuticle of human hair follicles.
42 citations
,
June 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” PAI-2 helps in the maturation and protection of hair and nail cells.
36 citations
,
January 1998 in “Journal of Dermatological Treatment” The questionnaire effectively measures men's perceived hair growth and can distinguish between different treatments and dosages.
34 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Human hair growth is influenced by androgen hormones, and red deer mane follicles have similar hormone receptors.
27 citations
,
February 1991 Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.
26 citations
,
December 2009 in “Laser Physics” Caffeine from shampoo penetrates hair follicles quickly and stays for at least 24 hours.
26 citations
,
October 1996 in “Journal of Endocrinology/Journal of endocrinology” Goat hair follicles have insulin-like growth factor-I receptors that might affect hair growth, but no melatonin receptors were found.
25 citations
,
July 2008 in “British Journal of Dermatology” CD10 and CD34 levels change during hair development and different hair growth stages, which could be important for hair regeneration treatments.
24 citations
,
February 2002 in “The journal of investigative dermatology/Journal of investigative dermatology” Two new proteins, hKAP1.6 and hKAP1.7, are found in the hair follicle cortex.
24 citations
,
December 1990 in “Pediatric Dermatology” Tight hairstyles like ponytails may cause hair casts by affecting scalp circulation and causing inflammation.
21 citations
,
July 2004 in “British Journal of Dermatology” HPV type 56 can hide in hair follicles even without visible warts.
20 citations
,
August 2017 in “Drug testing and analysis” Drugs localize differently in hair strands based on their properties.
20 citations
,
August 2007 in “Molecular therapy” Applying a DNA vaccine to skin with active hair growth boosts immune response and protection against anthrax in mice.
17 citations
,
June 2001 in “Journal of the National Cancer Institute” A specific hair diffraction pattern may indicate breast cancer if tested with the correct method.
17 citations
,
September 2014 in “PLoS ONE” SK2 channels help control sensory signals in rat muscle spindles and hair follicles.
17 citations
,
December 2001 in “Journal of Investigative Dermatology” The osteopontin gene is active in a specific part of rat hair follicles during a certain hair growth phase and might affect hair cycle and diseases.
16 citations
,
October 2009 in “Xenobiotica” The tested hair dye ingredients do not form harmful oxidized metabolites in the liver.
14 citations
,
October 2020 in “Scientific reports” Hair greying is linked to reduced ATM protein in hair cells, which protects against stress and damage.
11 citations
,
January 2013 in “Veterinary dermatology” Keratinocytes from dog hair follicles can create a functional skin layer in a lab model, useful for dog skin therapy.
11 citations
,
January 2009 in “Acta Dermato Venereologica” Early and aggressive treatment can significantly regrow hair in discoid lupus erythematosus.
9 citations
,
February 2022 in “BMC Genomics” Melatonin affects gene expression in goat hair follicles, potentially increasing cashmere production.
9 citations
,
September 2012 in “Journal of Cosmetic Dermatology” Hair capacitance mapping effectively measures hair surface moisture changes.