44 citations,
March 2004 in “Journal of Investigative Dermatology” The effects of estrogen on human hair growth are unclear and need more research.
41 citations,
June 2006 in “Journal of Investigative Dermatology” Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.
35 citations,
March 2007 in “Skin Research and Technology” The conclusion is that exogen is a unique hair cycle phase and the new sampling method specifically targets this stage, which may help in future hair loss research.
10 citations,
January 2012 in “Journal of biomedical optics” Melanin density affects hair color, and this method can help in cosmetic assessments and diagnosing hair diseases.
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.
2 citations,
January 2020 in “Clinical and experimental obstetrics & gynecology” Hair levels of estradiol and progesterone are higher in premenopausal than postmenopausal women, but the difference isn't statistically significant, indicating the need for a better measurement method.
1 citations,
April 2021 in “The journal of investigative dermatology/Journal of investigative dermatology” mTORC1 activity is important for hair growth and color, and targeting it could help treat hair loss and greying.
1 citations,
April 2018 in “PubMed” The medulla in Asian scalp hair has a tubular structure that allows ions and large molecules to flow through it.
September 2023 in “Bioscience, biotechnology, and biochemistry” Bacterial communities on scalp hair are unique to each person but consistent across different scalp sites.
June 2023 in “Hanguk ingeurie hakoeji” Eating fermented protein made from black bean powder twice a day for 60 days improved hair density but not scalp condition or hair thickness.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Low-intensity ultrasound may protect hair follicles from damage caused by a common chemotherapy drug.
Older women's scalp cells show changes that could contribute to hair thinning.
June 2019 in “Stem Cell Research” Scientists created MUSIi010-A, a stem cell line from a balding man's scalp, to study hair loss and develop potential treatments.
24 citations,
April 2006 in “Journal of the American Academy of Dermatology” Heat shock protein 27 is more present in the active growth phase of human scalp hair follicles.
14 citations,
February 2020 in “Scientific reports” Telocytes in the scalp may help with skin regeneration and maintenance.
5 citations,
July 2010 in “Journal of life sciences” Gray hair has more continuous medullation and a higher medullary diameter than black hair.
1 citations,
April 2023 in “Biomolecules” Fermented papaya and mangosteen in hair care products helped prevent hair loss and improve hair thickness.
December 2023 in “Scientific Reports” Scientists created cell lines from balding patients and found that cells from the front of the scalp are more affected by hormones that cause hair loss than those from the back.
April 2019 in “Journal of Investigative Dermatology” Caffeine can protect scalp hair follicles from damage caused by UV radiation.
63 citations,
September 2009 in “Regenerative Medicine” Scientists found a way to grow human hair cells in a lab that can create new hair when transplanted.
4 citations,
November 2020 in “BMC Dermatology” Researchers identified genes in scalp hair follicles that may affect hair traits and hair loss.
3 citations,
December 2019 in “Biomaterials Research/Biomaterials research” Calcium and magnesium in hair increase with age and are higher in adult women.
1 citations,
November 2022 in “Journal of Investigative Dermatology” ALRN-6924 may prevent hair loss caused by chemotherapy.
September 2024 in “Journal of the American Academy of Dermatology” Regulatory γδ T cells help protect hair follicles from alopecia areata and promote hair regrowth.
November 2023 in “Journal of Investigative Dermatology” γδTregs can protect hair follicles from alopecia areata and may help regrow hair.
April 2023 in “Journal of Investigative Dermatology” ALRN-6924 can protect hair follicles from chemotherapy damage by temporarily stopping cell division.
May 2017 in “Journal of microscopy and ultrastructure” Water quality affects mineral content in hair, and coconut oil can protect against damage.
January 2022 in “Experimental Dermatology” Minoxidil solution and foam both increase hair growth, but the solution works better than the foam.
42 citations,
March 2018 in “PLOS Biology” Autophagy is important for human hair growth and health.
4 citations,
November 1970 in “PubMed” Mustard oil and unsaturated fatty acids can stop the growth of scalp fungus and prevent it from infecting hair.