24 citations
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April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
24 citations
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January 2009 in “International Journal of Trichology” Sunlight exposure ages hair, making it brittle, stiff, and dry.
24 citations
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July 1987 in “Dermatologic Clinics” Systemic diseases can cause hair loss, which is often reversible with treatment.
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November 1978 in “JAMA” Valproic acid is effective for various seizures, but may cause temporary side effects like drowsiness and stomach issues.
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March 2017 in “Journal of Investigative Dermatology” An artificial lipid barrier can restore hair growth in cases of SCD1 deficiency.
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May 2010 in “Surface and interface analysis” Chemical treatments and UV radiation severely damage the lipid layer on hair.
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June 1992 in “PubMed” RAR-gamma 1 is important for normal skin maintenance and differentiation.
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September 2008 in “Brain & development” Biotin supplements increased biotin levels but did not significantly prevent hair loss in rats on valproic acid.
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September 2013 in “Current medicinal chemistry” HAC and BAC improve skin targeting and reduce diffusion without causing irritation.
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January 1995 in “Molecular Biology Reports” Scientists discovered two versions of a new human hair keratin gene.
20 citations
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January 2015 in “Journal of cosmetic dermatology” Older people's hair cuticles get more easily damaged and lose protective oils, especially in their 40s and 50s.
20 citations
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December 2010 in “Journal of Morphology” Lizard claws have hair-like keratins similar to those in mammals.
20 citations
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January 2003 in “Journal of oleo science” Chemical treatments and daily stresses damage hair, especially the cuticle layer.
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April 2020 in “Journal of ethnopharmacology” Prunus mira nut oil helps hair grow by affecting the Wnt/β-catenin signaling pathway.
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January 2020 in “Journal of Biophotonics” A PEG-400/oleic acid mixture best improves drug delivery monitoring through hair follicles.
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January 2009 in “International review of cell and molecular biology” Hair's strength and flexibility come from its protein structure and molecular interactions.
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December 2010 in “Journal of analytical atomic spectrometry” A new method accurately measures lead levels in hair to assess exposure.
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February 1992 in “Molecular Biology Reports” A specific type II hair keratin was identified and found in hair cortex and tongue cells.
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September 2019 in “Journal of biological chemistry/The Journal of biological chemistry” Mice without certain skin enzymes have faster hair growth and bigger eye glands.
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March 2008 in “International journal of pharmaceutics” Different factors like pH, gel type, and chemical enhancers affect how well hydrocortisone gets into hair follicles, and less hydrated skin doesn't work well with the test method.
15 citations
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March 2014 in “Acta naturae” Researchers made stem cells from human hair follicle cells with higher efficiency than from skin cells.
14 citations
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April 2000 in “Animal Science/Animal science” Nutrients like vitamins, copper, zinc, and amino acids are crucial for healthy hair and wool growth.
14 citations
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July 1977 in “PubMed” Applying linoleic acid to the skin fixed essential fatty acid deficiency symptoms.
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July 1977 in “Archives of Dermatology” Applying linoleic acid to the skin can reverse essential fatty acid deficiency symptoms.
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November 2022 in “Biomaterials Science” The microneedle patch effectively promotes hair regrowth by delivering miR-218.
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September 2017 in “International Journal of Cosmetic Science” Thioglycerol treatment at pH 9.0 with ammonia causes less hair damage and better waving than thioglycolic acid.
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November 2009 in “Journal of Dermatological Science” A gene mutation causes woolly hair in a Syrian patient.
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December 1983 in “Canadian journal of zoology” Heterotypic cell contacts likely help hair matrix cells differentiate during mouse hair follicle development.
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September 2021 in “Journal of molecular structure” The MXD/24HA salt is more effective for hair growth than raw MXD.
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March 2012 in “ATLA. Alternatives to laboratory animals” Hair follicles significantly affect the skin absorption of some drugs.