27 citations
,
February 1991 Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.
May 2026 in “Journal of Investigative Dermatology”
53 citations
,
April 2014 in “Experimental Dermatology” Wnt10b makes hair follicles bigger, but DKK1 can reverse this effect.
72 citations
,
December 2018 in “Journal of Experimental Zoology Part B Molecular and Developmental Evolution” Corneous beta-proteins evolved uniquely in reptiles and birds, forming scales, claws, beaks, and feathers.
4 citations
,
January 1992 in “The Tohoku Journal of Experimental Medicine” Zinc made mice's coarse hair turn into fine hair without affecting skin structure.
9 citations
,
January 2011 in “Skin Research and Technology” The new automatic tool accurately measures hair thickness and is reliable.
211 citations
,
April 2013 in “Development” More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.
16 citations
,
November 2008 in “Hormone research” The treatment slowed hair growth but didn't always match the improvements seen by doctors or patients.
May 2002 in “British Journal of Dermatology” Hair loss caused by longer latent hair cycle and sudden miniaturization, not gradual follicle size reduction.
October 2024 in “Journal of Cutaneous Pathology” Compound follicles in folliculitis decalvans mainly have active hair follicles.
21 citations
,
April 2004 in “Australasian Journal of Dermatology” A 3-year-old girl has a rare condition causing sparse hair and nail issues, with minimal improvement from treatment.
2 citations
,
January 2002 in “Zhiwu Yanjiu” Capitate trichomes have more endoplasmic reticulum and vacuoles, while peltate trichomes have more plastids and larger subcuticular spaces.
51 citations
,
November 2010 in “Dermatologic Surgery” The research provides specific measurements for hair follicles that can improve hair transplant and regeneration techniques.
April 2026 in “Academic Dermatology” Current methods for grading hair loss from cancer treatment are not accurate enough and need improvement.
November 2023 in “Journal of Dermatological Science” A new computer tool quickly measures hair thickness differences in people with common types of hair loss.
42 citations
,
July 2014 in “Journal of biological chemistry/The Journal of biological chemistry” Heparan sulfate is important for hair growth, preventing new hair formation in mature skin, and controlling oil gland development.
29 citations
,
November 2011 in “Veterinary pathology” The study found that mouse sweat glands develop before birth, mature after birth, and have specific keratin patterns.
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.
Hair can't be as strong as Rapunzel's because it's impractical to scale up due to defects.
48 citations
,
July 1993 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair growth is controlled by specific gene clusters and proteins, and cysteine affects hair gene expression in sheep.
3 citations
,
July 2024 in “Dermatology and Therapy” Hair shaft abnormalities can help distinguish mycosis fungoides from other skin conditions.
48 citations
,
July 1993 in “Archives of Dermatological Research” Merkel cells are abundant in facial vellus hair follicles, especially during the anagen phase.
6 citations
,
February 2023 in “Genes” CUX1 boosts sheep hair cell growth and affects curl patterns.
68 citations
,
April 2014 in “Journal of Investigative Dermatology” Trichohyalin-like proteins are essential for the development of skin structures like hair, nails, and feathers.
September 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” Non-invasive methods can effectively monitor hair growth cycles, aiding hair loss treatment development.
December 2025 in “Russian Journal of Skin and Venereal Diseases” Hair follicles are thinner in alopecia patients, especially in alopecia areata.
15 citations
,
May 2013 in “American Journal of Medical Genetics - Part A” People with X-linked hypohidrotic ectodermal dysplasia have no sweat ducts and less, thinner hair.
December 2025 in “Russian Journal of Skin and Venereal Diseases” Thinner hair follicle structures are linked to non-scar alopecia.
6 citations
,
April 1989 in “Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms” Sulphur in hair follicles increases from the bulb and then levels off, while other elements vary in distribution.
January 2013 in “대한미용학회지” Chamaecyparis obtusa oil promotes hair growth in mice.