3 citations
,
December 2024 in “Journal of Animal Physiology and Animal Nutrition” FGF20 is essential for hair follicle stem cell growth and development in fine-wool sheep.
1 citations
,
January 2013 in “Indian journal of dermatology, venereology, and leprology” A girl inherited excessive body hair from her mother and grandmother.
January 2003 in “Research Portal (King's College London)” Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.
August 1989 in “Proceedings ... annual meeting, Electron Microscopy Society of America/Proceedings, annual meeting, Electron Microscopy Society of America” The research provided a detailed view of the non-keratinous parts of human hair fibers.
June 2023 in “Experimental dermatology” Pubic hair has a thicker, more protective outer layer than scalp hair, possibly due to evolution.
2 citations
,
January 2019 in “Dermatology Review” Pigmented vellus and upright regrowing hairs predict hair regrowth in severe alopecia.
July 2024 in “Journal of Investigative Dermatology” Wnt and SHH signals together influence hair follicle cell development, offering insights for hair loss treatment.
June 2013 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Wnt ligand secretion by hair follicle cells is essential for hair growth and repair.
6 citations
,
December 2013 in “Journal of Cosmetic Dermatology” Pigmented concealing powders can improve the look of hair density for people with hair loss but need daily application and may not work well in wet conditions.
27 citations
,
November 2007 in “Genomics” Mutations in specific keratin genes cause improper hair structure in mice due to faulty keratin protein assembly.
40 citations
,
May 2016 in “Proceedings of the National Academy of Sciences of the United States of America” Changes in keratin make hair follicles stiffer.
12 citations
,
November 2014 in “PLOS Computational Biology” The study concluded that hair growth in mice is regulated by a stable interaction between skin cell types, and disrupting this can cause hair loss.
7 citations
,
January 1959 in “Canadian Journal of Chemistry” Human and horse hair have similar end groups to wool and feathers.
January 2004 in “Giornale di Metafisica: revista bimestrale di filosofia” Increased Wnt signaling causes hair graying by depleting melanocyte stem cells in aged mice.
Wnt10b promotes hair growth, while SFRP2 inhibits it in Wanxi Angora rabbits.
5 citations
,
January 1990 in “Journal of Society of Cosmetic Chemists of Japan” Permanent wave lotion can extract proteins from hair, especially when pH is higher, and repeated treatments or bleaching can damage hair.
January 2004 in “Linchuang pifuke zazhi” Black hairs have more pigment-related genes, while gray hairs have more keratin-related genes.
August 2012 in “Nature Cell Biology” Hair grows when stem cell offspring in the follicle base proliferate, influenced by the dermal papilla.
1 citations
,
January 2025 in “International Journal of Cosmetic Science” Age-related hair curvature increases due to internal structural changes from grooming.
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.
Yak hair stretches mainly due to macromolecules slipping past each other.
37 citations
,
January 2017 in “International Journal of Dermatology” Trichoscopy helps tell apart alopecia areata and trichotillomania in Asians by looking at specific hair and scalp features.
15 citations
,
October 2004 in “Colloids and surfaces. B, Biointerfaces” Holes in mature hair are likely caused by the removal of substances during hair care.
3 citations
,
July 2003 in “PubMed” The research found a way to measure hair surface changes by analyzing how light reflects off of it, and determined hair cuticle angles vary by hair length and color.
Muscarinic acetylcholine receptors help regulate and promote hair growth.
May 2025 in “Science Advances” PIEZO1 helps keep hair follicle stem cells inactive, affecting hair growth.
14 citations
,
September 2001 in “Archives of Dermatological Research” Blocking hair follicle development stops key gene signals needed for hair growth in mice.
19 citations
,
May 2008 in “Applied spectroscopy” Human hair has different protein structures in its cuticle and cortex.
July 2019 in “Journal der Deutschen Dermatologischen Gesellschaft” A mother and daughter have a rare genetic hair loss disorder with no effective treatment.
January 2024 in “International Journal of Advanced Research” Topical 6% salicylic acid effectively reduced skin plaques in a patient with wooly hair and palmoplantar keratoderma.