14 citations
,
January 1977 in “PubMed” The hair keratin variant is mostly found in Caucasians.
January 1997 in “Purdue e-Pubs (Purdue University)” Whole hair strands can reliably measure gamma ray exposure using ESR techniques, but samples should be analyzed quickly or stored in liquid nitrogen.
1 citations
,
June 2014 in “[Thesis]. Manchester, UK: The University of Manchester; 2014.” Chemical modifications can alter hair's stability and flexibility, with hydrophobic interactions helping maintain structure in humid conditions.
Chemical treatments weaken hair's thermal stability and structure.
28 citations
,
November 2009 in “Journal of Structural Biology” High flux X-ray beams quickly damage the structure of human hair.
November 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Skin cells and certain hair follicle areas produce hemoglobin, which may help protect against oxidative stress like UV damage.
42 citations
,
January 2014 in “BMC Genomics” Cetaceans lost hair genes to adapt to water.
20 citations
,
December 2010 in “Journal of Morphology” Lizard claws have hair-like keratins similar to those in mammals.
7 citations
,
February 2023 in “Inflammation and Regeneration” The protein interleukin-1 alpha helps regenerate hair follicles and increase stem cell growth in mice.
9 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Sex hormones and antiandrogens can either stimulate or inhibit human hair follicle cell growth depending on the dose.
6 citations
,
April 2012 in “Journal of Oral Pathology and Medicine” Rushton's hyaline bodies form from hair keratin and blood substances.
8 citations
,
April 2009 in “International journal of oncology” Hair follicle cells resist turning into skin cells.
38 citations
,
October 2011 in “Analytical biochemistry” Hair proteins have weak spots in their α-helical segments.
31 citations
,
December 1991 in “Annals of the New York Academy of Sciences” ORS and hair matrix cells balance growth and differentiation better than normal keratinocytes, with human dermal fibroblasts crucial for proper differentiation.
28 citations
,
July 2000 in “PubMed” Hair structure forms the same way inside and outside the body.
25 citations
,
August 2017 in “Frontiers in Zoology” Marine mammals lost many α-keratin genes, aiding their adaptation to aquatic life by becoming hairless.
19 citations
,
March 2013 in “Biology Letters” Early tetrapod keratins evolved into toe pad proteins in amphibians and hair proteins in mammals.
3 citations
,
December 2021 in “Materials today communications” A new film made from human hair supports skin cell growth better than collagen.
September 2023 in “Journal of Natural Fibers” Drying hair with a microfiber towel better maintains hair strength and structure than using a cotton towel or blow-drier.
47 citations
,
September 2011 in “Acta biomaterialia” Protein composition greatly affects the function of keratin biomaterials.
2 citations
,
April 2018 in “Journal of Investigative Dermatology” Frontal fibrosing alopecia shows increased inflammation and JAK-STAT pathway activity without reduced hair proteins.
169 citations
,
May 2006 in “Genes & Development” Keratin 17 is crucial for normal hair growth by regulating hair cycle transitions with TNFα.
70 citations
,
June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
17 citations
,
July 2018 in “International Journal of Cosmetic Science” Keratin-based particles safely improve hair strength, smoothness, and heat protection.
April 2026 in “Dove Medical Press (Taylor and Francis Group)” Myrtus communis leaf extract may help with hair loss and wound healing.
April 2026 in “SHILAP Revista de lepidopterología” Myrtus communis leaf extract may help with hair loss and wound healing.
November 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Hemoglobin α acts as an antioxidant in skin cells, especially protecting hair follicle stem cells from UV damage.
28 citations
,
January 2013 in “Stem cells” Certain human skin cells marked by CD44 and ALDH are rich in stem cells capable of long-term skin renewal.
November 2022 in “Journal of Investigative Dermatology” The extract of Silybum marianum, Manganese PCA, and Lespedeza capitata can boost hair growth and extend the growth phase when combined in a serum.
Estrogen and its receptors play a key role in hair growth, with differences between males and females.