128 citations,
March 2006 in “American Journal of Pathology” Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.
33 citations,
November 2007 in “JAT. Journal of applied toxicology/Journal of applied toxicology” Human scalp hair on mice can effectively monitor mercury exposure.
13 citations,
May 2022 in “Cell discovery” The study found new details about human hair growth and suggests that preventing a specific biological pathway could potentially treat hair graying.
8 citations,
September 1993 in “British journal of dermatology/British journal of dermatology, Supplement” A new method helps isolate key hair components to study hair growth and loss.
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.
6 citations,
January 2018 in “Journal of Cellular Physiology” Human scalp fat stem cells showed improved cartilage-like development on a special scaffold with freeze-thaw treatment.
5 citations,
February 2018 in “Experimental Dermatology” Scientists developed a way to isolate sweat glands from the scalp during hair transplants, keeping them alive for 6 days for research and cosmetic uses.
5 citations,
May 2020 in “Pharmaceutical Research” Heat and chemicals improve finasteride delivery to scalp and hair follicles, potentially enhancing treatment for hair loss.
4 citations,
September 2012 in “Journal of dermatological science” The hair follicle's connective tissue is a key source of a certain collagen in human scalp skin.
3 citations,
February 2019 in “Journal of Cosmetic Dermatology” The effects of estrogen on human scalp hair growth are unclear and need more research.
Applying thyroid hormones to the scalp can help hair grow.
November 2022 in “Journal of Investigative Dermatology” Growth hormone-releasing hormone (GHRH) boosts hair growth and human scalp hair follicles have their own growth hormone system.
Human scalp hair follicles have PGE2 and its receptors, which might affect hair growth.
February 2010 in “Journal of the American Academy of Dermatology” Activating cAMP and ATP improves hair growth and strength.
Low doses of certain Chinese herbs can promote hair growth, while high doses may inhibit it.
8 citations,
November 2020 in “Frontiers in Cell and Developmental Biology” Certain genes are more active in baby scalp cells and can help grow hair when added to adult mouse skin cells.
16 citations,
January 2018 in “Biochemical and Biophysical Research Communications” Researchers created five new human scalp cell lines that could be useful for hair growth and loss research.
August 2023 in “International Journal of Molecular Sciences” The human scalp hair bulb contains different types of melanocytes with varying abilities to produce melanin.
The human scalp has different types of pigment cells in hair follicles with varying abilities to produce pigment.
April 2018 in “The journal of investigative dermatology/Journal of investigative dermatology” Researchers found a new way to isolate sweat glands from the scalp for study and culture.
117 citations,
September 2013 in “Lasers in Surgery and Medicine” Red light therapy at 655 nm significantly improved hair growth in men with hair loss.
46 citations,
April 2016 in “Journal of Investigative Dermatology” New genes found linked to balding, may help develop future treatments.
30 citations,
September 2004 in “Experimental Dermatology” Scalp hair follicle culture has limits for testing minoxidil's hair growth effects.
7 citations,
September 2020 in “Bioscience Biotechnology and Biochemistry” The scalp has more diverse bacteria, while hair has more bacteria and unique types.
September 2023 in “International Journal of Cosmetic Science” Both shampoos increased scalp germ numbers but did not change the overall microbial community composition.
December 2022 in “Himi, himijn tehnologijn hùrèèlèngijn èrdèm šinžilgèènij bùtèèl” Hair products with copper and zinc enriched yeast made hair thicker and denser.
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.
81 citations,
August 2014 in “Lasers in Surgery and Medicine” Red light therapy is safe and effectively increases hair growth in women with hair loss.
51 citations,
November 2010 in “Dermatologic Surgery” The research provides specific measurements for hair follicles that can improve hair transplant and regeneration techniques.
47 citations,
July 1967 in “Science” Not eating enough protein can cause hair roots to shrink and lose color, and hair to become thinner.