September 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” A new staining method shows a special area in the hair's skin layer with lots of proteoglycans.
Forensic hair analysis for drugs is now more reliable and accurate.
April 2011 in “ISRN Dermatology (Print)” The wigs made from human hair and polypropylene were mostly well-tolerated and durable in rabbits, suggesting they could be a new option for people with extensive hair loss.
57 citations
,
November 1987 in “Pediatric Dermatology” Children's hair grows in different types from before birth through puberty, with growth rates and characteristics varying by age, sex, and race.
46 citations
,
October 2009 in “Archives of Dermatology” Loose anagen hair syndrome, often affecting young girls, can be diagnosed with a hair-pull test and usually gets better on its own, but severe cases may need treatment.
86 citations
,
May 2002 in “Journal of Investigative Dermatology” A new keratin, hK6irs1, is found in all layers of the hair follicle's inner root sheath.
3 citations
,
December 2022 in “npj Regenerative Medicine” HSPGs help control stem cell behavior, affecting hair growth and offering a target for hair loss treatments.
A genetic variant in the KRT71 gene may cause loose anagen hair and wooly hair, and symptoms might improve with age.
13 citations
,
August 2007 in “Journal of Investigative Dermatology” Mouse hair can regrow in a special lab setup without serum.
166 citations
,
July 1999 in “American Journal Of Pathology” The hairless (hr) gene is essential for normal hair follicle function and its mutation leads to hair loss.
100 citations
,
May 2006 in “American Journal Of Pathology” Matriptase is crucial for skin barrier, hair growth, and may contribute to skin cancer.
88 citations
,
June 2000 in “Journal of Investigative Dermatology” Keratin 17 is important for hair and nail structure and affects pachyonychia congenita symptoms.
54 citations
,
January 2009 in “Development” β-catenin, Shh, and Bmp signaling control hair follicle development.
40 citations
,
September 2010 in “Journal of Biological Chemistry” Keratin K80 is an ancient protein found in various tissues, important for cell structure and tissue differentiation.
11 citations
,
May 2012 in “Genesis” Bmpr2 and Acvr2a receptors are crucial for hair retention and color.
7 citations
,
October 2024 in “Cells” Autophagy is essential for proper skin cell development and function.
4 citations
,
June 2023 in “Journal of developmental biology” The skin systems of jawed vertebrates evolved diverse appendages like hair and scales from a common structure over 420 million years ago.
1 citations
,
October 2025 in “Journal of Microbiology and Biotechnology” Natural extracts may promote hair growth with fewer side effects than conventional treatments.
1 citations
,
April 2022 in “Regenerative Therapy” Activating the GDNF-GFRα1-RET signaling pathway could potentially promote skin and limb regeneration in humans and could be used to treat hair loss and promote wound healing.
December 2025 in “Sustainable Chemistry One World” Mangosteen waste can be used as an eco-friendly natural hair dye, producing a lasting reddish color and strengthening hair.
June 2025 in “Microorganisms” Microbial imbalances in hair follicles may contribute to hair loss, especially in women.
January 2025 in “Advanced Materials Interfaces” Tannic acid can reduce hair loss by 56.2% by coating hair and releasing beneficial molecules.
356 citations
,
December 1986 in “The journal of cell biology/The Journal of cell biology” Hair and nail cells share similar proteins, indicating a common differentiation pathway.
68 citations
,
August 2014 in “PeerJ” Human hair proteins vary by individual, body site, and ethnicity, useful for forensics.
60 citations
,
March 2006 in “Journal of Medical Genetics” A mutation in the KRTHB5 gene causes hair and nail issues.
44 citations
,
August 1990 in “PubMed” Keratins K1 and K10 are found in the inner root sheath and cuticle of human hair follicles.
27 citations
,
February 1991 Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.
20 citations
,
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.
16 citations
,
May 2017 in “Journal of cosmetic dermatology” An unhealthy scalp can damage new hair, but using ZPT shampoo can improve hair health.
15 citations
,
January 1998 Frequent blow-drying causes cracks and breakage in hair cuticles.