61 citations,
July 2011 in “PLOS ONE” Spermidine may help reduce hair loss and deserves further testing as a treatment.
23 citations,
January 2001 in “International journal of toxicology” St. John's Wort extract and oil safety in cosmetics is unclear; more data needed on photosensitization, toxicity, and human irritation.
17 citations,
May 2018 in “PeerJ” VB-1, a natural compound, may promote hair growth by enhancing a key cell growth pathway.
15 citations,
October 2014 in “The journal of investigative dermatology/Journal of investigative dermatology” Erlotinib causes skin inflammation through IL-1, which can be reduced by anakinra.
7 citations,
April 2022 in “Journal of pharmaceutical and biomedical analysis” The method can measure multiple steroids in human hair to study long-term steroid metabolism, especially in newborns and children.
4 citations,
August 2022 in “International Journal of Molecular Sciences” Human foreskin does not show aging or reduced cell growth after radiation, and H2A.J is not a good marker for radiation-induced aging.
1 citations,
January 2024 in “Scientific reports (Nature Publishing Group)” Human hair was used to make biodegradable plastic films that could be useful for packaging and disposable products.
May 2024 in “The journal of investigative dermatology/Journal of investigative dermatology” Applying DMG-Na to the skin increases blood flow and may help with skin conditions.
April 2024 in “Advances in Redox Research” Human hair strength and health are linked to sulfur compounds that can be reduced by stress but improved with sulfur supplements.
The natural compound VB-1, found in a Chinese herb, can promote hair growth by boosting cell activity in human skin cells.
VB-1, a natural compound, may promote hair growth by enhancing important cell signaling and increasing key gene expression.
101 citations,
July 1998 in “Journal of Investigative Dermatology” UVB exposure in human skin causes macrophages to produce more IL-10 and less IL-12, leading to immunosuppression.
November 2023 in “Journal of Investigative Dermatology” γδTregs can protect hair follicles from alopecia areata and may help regrow hair.
October 2021 in “QJM: An International Journal of Medicine” Changes in NRF2 levels may contribute to hair loss in Egyptian men.
25 citations,
February 2007 in “Forensic science international” Different hair cleaning methods caused varying levels of damage to the hair's outer layer.
15 citations,
October 2004 in “Colloids and surfaces. B, Biointerfaces” Holes in mature hair are likely caused by the removal of substances during hair care.
13 citations,
September 2014 in “Journal of photochemistry and photobiology. B, Biology” UV radiation increases protein loss from hair and reduces hair protein quality.
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.
January 2022 in “Pastic and aesthetic research” PRP helps skin regeneration but needs standardized testing for consistent results.
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.
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.
32 citations,
February 2018 in “Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy” Cosmetic residues on individual hairs can be identified and differentiated using ATR FT-IR microspectroscopy.
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.
12 citations,
July 2017 in “Scientific reports” Researchers developed a way to study human body clocks using hair tissue, which works similarly in both healthy and dementia patients.
7 citations,
September 2020 in “Bioscience Biotechnology and Biochemistry” The scalp has more diverse bacteria, while hair has more bacteria and unique types.
5 citations,
April 2023 in “BMC Microbiology” Shampoo with heat-killed Lacticaseibacillus paracasei GMNL-653 improves scalp health and hair growth by changing scalp bacteria.
3 citations,
February 2023 in “ACS omega” Grape seed oil improved hair quality the most, followed by rosehip and safflower seed oils, and reduced damage from shampoo.
February 2024 in “International Journal of Molecular Sciences” Hair loss in Androgenetic Alopecia is caused by genetics, aging, and lifestyle, leading to hair follicle shrinkage and related health risks.
36 citations,
June 2014 in “PLOS ONE” Finasteride, a hair loss drug, may cause long-term sexual side effects due to changes in hormone receptor levels.