Hairlessness in mammals is due to complex genetic changes in both genes and regulatory regions.
10 citations
,
April 2020 in “PloS one” Lack of Crif1 in hair follicle stem cells slows down hair growth in mice.
22 citations
,
August 2013 in “Facial Plastic Surgery Clinics of North America” A cosmetic procedure can lower the hairline by up to 10 cm, with high satisfaction but potential for temporary sensation loss and rare risks.
19 citations
,
March 1988 in “International Journal of Dermatology” Hair shaft dysplasias are abnormal hair conditions that can be inherited or acquired and may signal other health issues, with limited treatment options available.
37 citations
,
June 2000 in “Experimental dermatology” The Lanceolate hair-J mutation in mice mimics human hair disorders like Netherton's syndrome.
3 citations
,
January 2019 in “Skin Research and Technology” Frequent use of hair straighteners can cause hair loss similar to scarring alopecia in young Turkish women.
1 citations
,
January 2021 in “Skin appendage disorders” Chemotherapy patients don't all lose their hair due to factors like hair growth rates, age, genetics, and the type of drugs used.
January 2025 in “Scientific Reports” Hair analysis can show changes in vitamin D levels over time.
January 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” Rhamnose may help hair growth and pigmentation, making it a potential treatment for hair loss.
1 citations
,
March 2014 in “Journal of Innovative Optical Health Sciences” Hair structure worsens as tumors grow in mice.
December 2024 in “PLoS ONE” Hair growth serums A and C can affect hair growth genes and pathways, suggesting potential for personalized hair loss treatments.
62 citations
,
December 2008 in “Journal of structural biology” Hair curvature in Japanese people is linked to specific cell types and filament arrangements in the hair cortex.
15 citations
,
January 1987 in “Electrophoresis” Human head hair proteins can be typed into eight distinct patterns, useful for genetic and forensic investigations.
September 2017 in “Journal of Investigative Dermatology” The research concluded that hyaluronic acid affects the formation and growth of hair follicle-like structures in a lab setting.
5 citations
,
February 1998 in “Polymer” Human hair keratin has a 40% α-helix structure that changes to a random coil in 8 M urea.
101 citations
,
July 1985 in “Journal of the American Academy of Dermatology” Biotin improved hair growth and combability in one child with uncombable hair syndrome.
January 2005 in “日本機械学會論文集. C編” Minoxidil sulfate and pinacidil promote hair growth likely by increasing blood flow, not by activating K channels.
92 citations
,
September 2013 in “Journal of Investigative Dermatology” BMAL1 and Period1 genes can influence human hair growth.
April 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” A specific mutation in the TRPV3 gene causes hair follicle cells to develop improperly, leading to hair loss.
147 citations
,
April 1994 in “Drug Safety” Some drugs can cause hair loss or increase hair growth, but these effects are usually reversible when the drug is stopped.
East and Southeast Asians typically have less dense but thicker, straight black hair.
40 citations
,
April 2006 in “Journal of the European Academy of Dermatology and Venereology” The Trichoscan system was found to be inaccurate for measuring hair growth, needing better software to be useful.
1 citations
,
January 2022 in “Faculty reviews” The best long-lasting results in treating hair loss may be achieved through combination therapy, including treatments like finasteride, minoxidil, and platelet-rich plasma injections.
January 2026 in “British Journal of Dermatology” Caffeine and DMG increase calcium influx in hair follicle cells without being toxic.
40 citations
,
August 2006 in “Current Drug Safety” Some drugs can cause hair loss, excessive growth, or color changes, often reversible but sometimes permanent.
29 citations
,
April 2000 in “Journal of histochemistry and cytochemistry/The journal of histochemistry and cytochemistry” ICAM-1 helps regulate hair growth cycles and skin remodeling.
2 citations
,
August 1993 in “Archives of Dermatology” A 39-year-old woman developed uncombable hair syndrome after taking oral contraceptives.
65 citations
,
February 1992 in “Development” Type II keratin genes are crucial for hair follicle differentiation and have a conserved structure and expression pattern.
January 2015 in “Journal of clinical and investigative dermatology” Clipping is the best method to prepare rats for studying hair loss from chemotherapy because it causes less skin damage and effectively gets hair to the right growth phase.
27 citations
,
January 2020 in “Experimental Dermatology” Immune cells affect hair growth and could lead to new hair loss treatments.