59 citations
,
August 1981 in “PubMed” Trichilemmal keratinization is a unique process in hair follicles where the outer root sheath turns into keratin without a specific layer.
August 2019 in “Journal of the American Academy of Dermatology” Older adults may experience painful finger pitting due to nerve changes in aging skin, and treatments can help reduce symptoms.
34 citations
,
September 2007 in “Experimental Dermatology” The outer layer of Merino wool is rich in sulfur proteins, making it resistant to damage.
January 2026 in “Clinical Case Reports” A 6-year-old girl had both monilethrix and trichorrhexis nodosa, causing brittle hair, with minimal improvement from treatment.
January 2005 in “Journal of Zhejiang University(Sciences Edition)” Yuyi hairless mice lose hair after birth, develop thick, loose skin with folds, and show disorganized skin structure as they age.
17 citations
,
April 1997 in “American Journal of Dermatopathology” PC-associated alopecia has unique microscopic features.
March 2015 in “Zagazig University Medical Journal” Damage to hair follicle stem cells may cause permanent hair loss and scarring in PCA.
11 citations
,
January 1997 in “Journal of Dermatological Science” A new protein linked to hair strength was identified, aiding in understanding brittle hair conditions.
September 2017 in “Journal of Investigative Dermatology” Loss of COL17A1 causes hair follicle stem cells to age and leads to hair loss.
January 2018 in “Elsevier eBooks” Different nail disorders are treated by targeting their specific causes and using appropriate medications or protective measures.
21 citations
,
July 2010 in “International Journal of Cosmetic Science” Older people's hair becomes less shiny because it gets more uneven and curved.
17 citations
,
February 2015 in “Experimental Dermatology” Keratins are crucial for hair strength, and mutations in certain keratin genes cause hair disorders.
March 2007 in “International Journal of Cosmetic Science” Hair with more melanin resists weather damage better.
January 2023 in “Skin appendage disorders” Two Hispanic women developed Plica neuropathica, a condition causing tangled hair, possibly due to hair damage and various risk factors.
December 2020 in “Dermatology practical & conceptual” Trichoscopy helped diagnose a teenage girl's hair loss as monilethrix.
March 2010 in “International Journal of Cosmetic Science” Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.
38 citations
,
September 1997 in “The journal of investigative dermatology/Journal of investigative dermatology” A mutation in mice causes hair loss and skin issues due to a defect in a gene affecting cell adhesion.
97 citations
,
January 2005 in “Wear” Human hair and skin friction vary by ethnicity, hair type, and environmental conditions.
8 citations
,
January 2008 in “Pediatric dermatology” Hair gels may cause split ends in children.
41 citations
,
October 2000 in “Dermatologic clinics” Better hair care products are needed to protect against grooming and chemical damage.
37 citations
,
January 2022 in “Frontiers in Genetics” Aging reduces dermal sheath cells, affecting youthful skin appearance.
March 2026 in “The Journal of Steroid Biochemistry and Molecular Biology” Deleting vitamin D and calcium receptors in skin cells increases skin cancer risk by reducing DNA repair and stress response.
5 citations
,
November 2021 in “The journal of investigative dermatology/Journal of investigative dermatology” Wnt/β-catenin signaling is important for keeping skin cell attachment structures stable.
23 citations
,
March 2017 in “Journal of Investigative Dermatology” An artificial lipid barrier can restore hair growth in cases of SCD1 deficiency.
38 citations
,
January 2014 in “Journal of Dermatological Science” Krtap11-1 is important for hair strength and structure.
1 citations
,
January 2014 in “International Journal of Trichology” A patient with a rare hair condition and skin disorder showed hair improvement after treatment.
17 citations
,
July 2014 in “Our Dermatology Online” Older adults have a wide range of skin conditions, with dry skin being very common and many also experiencing skin growths, itching, and infections.
2 citations
,
December 2013 in “The Journal of Dermatology” 15 citations
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January 2011 in “International journal of trichology” Using a hot iron on wet hair can cause dry, brittle hair with air bubbles inside.
242 citations
,
February 2016 in “Science” Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.