40 citations
,
January 2013 in “Frontiers in Endocrinology” Finger length ratios are not linked to the number of specific gene repeats affecting testosterone sensitivity.
9 citations
,
April 2019 in “Journal of Structural Biology” Keratin fibers in hair twist left-handed.
5 citations
,
August 2005 in “Anatomy and Embryology” Rat skin has a linear system of nerve fibers linked to hair follicles and muscles.
December 2022 in “Scientific Reports” Stem cells from whiskers can be transplanted to stimulate hair growth.
10 citations
,
February 2014 in “Fitoterapia” Pomiferin may improve skin and hair by increasing important protein production.
March 2024 in “Agriculture” CRISPR/Cas9 gene-editing shows promise for improving sheep and goat breeding but faces challenges with efficiency and accuracy.
182 citations
,
June 2017 in “Biomaterials” Special fiber materials boost the healing properties of certain stem cells.
179 citations
,
June 2000 in “The American journal of pathology” The absence of functional sebaceous glands causes hair follicle destruction and scarring alopecia.
117 citations
,
August 2005 in “Ultramicroscopy” Human hair's strength and flexibility vary by ethnicity, damage, and treatment.
63 citations
,
February 2017 in “ACS biomaterials science & engineering” Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.
18 citations
,
August 2017 in “PLOS ONE” Skin and its underlying fat layer act together to resist mechanical stress, and reinforcing this composite structure may help more with anti-aging than just strengthening the skin alone.
7 citations
,
October 2019 in “Frontiers in bioengineering and biotechnology” Fusion proteins can protect hair from heat damage.
5 citations
,
June 2023 in “BMC genomics” A specific gene mutation causes long hair in Angora rabbits.
4 citations
,
June 2021 in “Frontiers in Pharmacology” Bone marrow stem cells and their medium help hair regrowth.
2 citations
,
July 2019 in “Cosmetics” Beautiful hair is flexible and elastic due to its unique double-layered structure and can be enhanced with succinic acid treatment.
December 2025 in “Biopolymers” Heat worsens damage in chemically treated hair, especially bleached and straightened hair.
September 2025 in “Cell Reports” Skin stretching can improve vaccine delivery through hair follicles and boost immune response.
May 2025 in “Neuropharmacology” Finasteride reduced seizures and prevented cognitive issues in rats after neonatal asphyxia but increased anxiety later.
April 2024 in “International journal of molecular sciences” Dermal factors are crucial in regulating melanin production in skin.
KRTAP6 genes affect wool quality in sheep.
61 citations
,
October 1996 in “Development” Hair growth can be stimulated by combining certain skin cells, which can rejuvenate old cells and cause them to specialize in hair follicle creation.
25 citations
,
November 2012 in “Thermochimica Acta” Internal lipids in keratin fibers, like wool and hair, reduce water absorption and release.
12 citations
,
July 2016 in “British journal of dermatology/British journal of dermatology, Supplement” Different hair fiber development might explain why hair loss severity varies in patients with a specific genetic mutation, and treatments that thicken hair could help.
9 citations
,
April 2019 in “Journal of structural biology” Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.
April 2017 in “Journal of dermatology & cosmetology” The marine protein complex, Viviscal®, was found to effectively reduce hair loss and improve hair, skin, and nails quality in women.
75 citations
,
September 2007 in “Journal of Heredity” FGF5 gene mutations cause long hair in domestic cats.
44 citations
,
December 1991 in “Annals of the New York Academy of Sciences” EGF and FGF help hair growth by affecting cell differentiation and fiber growth.
3 citations
,
February 2019 in “Animal biotechnology” The PLP2 gene affects cashmere fiber quality in goats and is linked to hair growth and loss.
October 2001 in “Dermatologic Surgery” Cutting and implanting hair follicles can create finer, more natural-looking hairlines, with about half of the implanted hairs growing back.
12 citations
,
January 2014 in “Cell structure and function” Different combinations of human hair keratins affect how hair fibers form.