28 citations
,
September 2013 in “Journal of Investigative Dermatology” The document concludes that dermal papilla cells are key for hair growth and could be used in new hair loss treatments.
May 2026 in “Journal of Investigative Dermatology” May 2006 in “The American journal of medicine” The man had persistent itchy bumps on his cheeks and neck despite trying different shaving products.
38 citations
,
September 1997 in “The journal of investigative dermatology/Journal of investigative dermatology” A mutation in mice causes hair loss and skin issues due to a defect in a gene affecting cell adhesion.
41 citations
,
June 2010 in “Journal of Investigative Dermatology” New cells are added to the hair's dermal papilla during the active growth phase.
June 2026 in “Frontiers in Cell and Developmental Biology” Dermal papilla cells are key to fine wool growth in sheep.
September 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Some hair growth cells remain in partially bald areas of Indian men with hair loss.
55 citations
,
February 2014 in “Journal of Structural Biology” Human hair has a complex, variable structure with a consistent matrix and double-twist pattern.
May 2026 in “Theranostics” November 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” Researchers identified new cell types and genes in early hair follicle development.
60 citations
,
April 2018 in “Clinical, cosmetic and investigational dermatology” Tight hairstyles and chemical relaxers can cause hair loss known as traction alopecia.
January 1999 in “Journal of S C C J” Certain growth factors regulate hair growth cycles, male hormones affect hair cycles, and drugs like Minoxidil and Finasteride can stimulate hair growth and inhibit male pattern baldness respectively.
A 5% pomegranate peel water extract optimally enhances hair growth.
January 1999 in “대한피부과학회지” Trichotillomania is more common in young females and often linked to stress and psychiatric conditions, with hair loss and increased catagen hair observed.
24 citations
,
January 2006 in “Skin Pharmacology and Physiology” Finasteride reverses early hair loss and promotes growth.
4 citations
,
September 2019 in “Journal of cosmetic dermatology” Topical bimatoprost 0.01% improves eyebrow density and diameter, especially at the tail.
June 2024 in “Annals of Medicine and Surgery” A 23-year-old Syrian woman has two rare hair disorders, and avoiding hair treatments plus using vitamins and minoxidil may help.
44 citations
,
August 1990 in “PubMed” Keratins K1 and K10 are found in the inner root sheath and cuticle of human hair follicles.
263 citations
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February 2011 in “Journal of Controlled Release” Medium-sized particles penetrate hair follicles better than smaller or larger ones, which could improve delivery of skin treatments.
3 citations
,
September 2019 in “Clinical and experimental dermatology” Basal cell carcinomas may differentiate similarly to hair follicles and could be influenced by hair cycle-related treatments.
January 2014 in “Journal of the Korean Society of Design Culture” The study confirmed that changes in hair structure in women with hair loss conditions matched what is taught in beauty college trichology courses.
45 citations
,
January 2010 in “Forensic science international” Neonatal hair can help determine drug exposure during pregnancy.
10 citations
,
January 1987 in “PubMed” Thyroid hormone and epidermal growth factor affect hair angle, tooth eruption, and ear development in rats.
1 citations
,
February 2009 in “Journal of Investigative Dermatology” Lipase H is important for hair follicle function and shaping hair fibers.
86 citations
,
May 2002 in “Journal of comparative neurology” Nerve growth in mouse skin and hair follicles happens in stages and is closely linked to hair development.
10 citations
,
August 2020 in “Acta histochemica” All-trans-retinoic acid stops mink hair growth by affecting cell growth and causing cell death.
September 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” Hair loss in males and females is influenced by immune cell interactions, with potential treatments identified.
67 citations
,
August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Androgens promote beard growth but cause hair loss in androgenetic alopecia, with TGF-β1 as a potential treatment target.
1 citations
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March 2014 in “Journal of Innovative Optical Health Sciences” Hair structure worsens as tumors grow in mice.
December 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Abnormal contraction of connective tissue in hair follicles causes hair loss by killing off important cells, and treating this could improve hair growth.