16 citations
,
August 2000 in “Il Farmaco” Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.
15 citations
,
August 2017 in “International Journal of Molecular Medicine” Panax ginseng extract may help prevent hair loss caused by DKK-1.
9 citations
,
January 2011 in “Journal of X-ray science and technology” Perming and bleaching damage hair differently, with bleached hair having more cysteic acid in the cuticle.
8 citations
,
January 2020 in “PeerJ” Alopecia Areata causes significant structural and compositional changes in hair.
4 citations
,
September 2020 in “PeerJ” Platelet factor 4 slows down hair growth and could make hair loss treatments more effective if removed.
2 citations
,
April 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” The conclusion is that analyzing RNA from skin oils is a promising way to understand skin diseases.
January 2025 in “Scientific Reports” Hair analysis can show changes in vitamin D levels over time.
March 2024 in “International journal of molecular sciences” Meibomian glands are highly specialized and differ significantly from other sebaceous glands in structure and function.
December 2023 in “Data in Brief” Curly hair's strength and flexibility vary with moisture and temperature.
69 citations
,
January 2002 in “Journal of biomedical optics” Dyes can penetrate human skin and hair follicles up to 1.2 mm deep and the sebaceous gland can store dye; Indocyanine Green lotion was made for safe dyeing and monitoring.
205 citations
,
July 2009 in “Journal of Dermatological Science” Male and female skin differ in many ways, which could lead to gender-specific skin treatments.
17 citations
,
June 2017 in “Journal of pharmaceutical sciences” Researchers developed a nanomedicine for acne treatment that delivers medication with less irritation and is non-irritating for oily skin.
12 citations
,
January 2021 in “Cell Transplantation” Baby teeth stem cells can help grow hair in mice.
April 2026 in “Experimental & Molecular Medicine” Mouse and human skin development share similar fibroblast timelines.
181 citations
,
January 2009 in “Nature Genetics” Certain mutations in a hair growth-related gene cause a type of genetic hair loss.
3 citations
,
March 2022 in “Haya: the Saudi journal of life sciences” Dates may improve heart health, fight infections, protect kidneys, reduce inflammation, support pregnancy, promote dental and bone health, enhance mental function, and have anti-cancer properties, and are also beneficial for skin and hair care.
January 2021 in “Middle East journal of applied sciences” Zinc is essential for plant growth and human health, but many soils lack enough zinc, affecting crops and potentially leading to health problems.
70 citations
,
June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
7 citations
,
September 2020 in “Bioscience Biotechnology and Biochemistry” The scalp has more diverse bacteria, while hair has more bacteria and unique types.
550 citations
,
December 2005 in “The Journal of clinical investigation/The journal of clinical investigation” Researchers successfully isolated and identified key markers of stem cell-enriched human hair follicle bulge cells.
140 citations
,
December 1998 in “Journal of Investigative Dermatology” Apoptosis in hair follicles varies by growth phase, with TGF-β possibly starting the catagen phase.
93 citations
,
July 2006 in “Journal of Investigative Dermatology” K25, K27, and K28 are found in all inner root sheath layers of hair, while K26 is only in the cuticle.
86 citations
,
May 2002 in “Journal of Investigative Dermatology” A new keratin, hK6irs1, is found in all layers of the hair follicle's inner root sheath.
82 citations
,
January 2002 in “Journal of drug targeting” Drugs penetrate scalp skin better than abdominal skin, with scalp hair follicles aiding in higher drug delivery.
64 citations
,
January 2010 in “The FASEB Journal” Prolactin affects the production of different keratins in human hair, which could lead to new treatments for skin and hair disorders.
40 citations
,
January 1994 in “Skin Pharmacology and Physiology” Male hormones affect oil-producing skin cells differently based on their body location, and the drug spironolactone can reduce these effects.
39 citations
,
March 2008 in “Journal of biological chemistry/The Journal of biological chemistry” GLI2 increases follistatin production in human skin cells.
37 citations
,
November 2019 in “Journal of Microbiology and Biotechnology” Loliolide can boost hair growth by activating specific cell pathways.
30 citations
,
August 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” TGase 3 helps build hair structure by forming strong bonds between proteins.
29 citations
,
January 2021 in “Journal of Investigative Dermatology” Fat under the skin releases HGF which helps hair grow and gain color.