April 2026 in “Microorganisms” SCFF may help promote hair growth and scalp health.
November 2025 in “Communications Biology” Human hair contains many different molecules that change along its length, influenced by personal care products.
22 citations
,
March 2012 in “Molecular Medicine Reports” DHT affects hair follicle cells by changing microRNA levels, leading to less cell growth and more cell death.
9 citations
,
September 2018 in “Journal of Photochemistry and Photobiology B-biology” A hair-growth formula with cystine and thiamin helps protect skin cells against UV damage and improves their growth.
3 citations
,
April 2022 in “Microorganisms” People with severe hair loss (Alopecia Areata) have different scalp bacteria than healthy people, which might help predict the condition's progress.
September 2021 in “Han'gug mi'saengmul saengmyeong gong haghoeji/Han-guk misaengmul saengmyeong gonghak hoeji” Tetrathelmis tetrathele extract may help prevent hair loss and improve scalp health.
1 citations
,
April 2019 in “PubMed” The medulla in Asian scalp hair has a tubular structure that allows ions and large molecules to flow through it.
13 citations
,
June 2007 in “Journal of Dermatological Science” Researchers created a cell line to study hair growth and found specific genes affected by dihydrotestosterone.
7 citations
,
September 2020 in “Bioscience Biotechnology and Biochemistry” The scalp has more diverse bacteria, while hair has more bacteria and unique types.
January 2025 in “British Journal of Dermatology” Long scalp hair evolved for cooling and social signaling.
September 2024 in “Preprints.org” Hair protects the scalp from skin cancer by aiding immune defense.
September 2023 in “International Journal of Cosmetic Science” Both shampoos increased scalp germ numbers but did not change the overall microbial community composition.
65 citations
,
October 2018 in “Frontiers in cellular and infection microbiology” Certain bacteria and fungi are linked to healthy scalps and dandruff, suggesting that the scalp's microbial balance affects its health.
6 citations
,
July 2018 in “Advances in Clinical and Experimental Medicine” Different body parts have varying levels of certain hair follicle markers.
11 citations
,
February 2019 in “Stem cells international” Skin-derived stem cells grow faster and are easier to obtain than hair follicle stem cells, but both can become various cell types.
4 citations
,
January 2017 in “Annals of Dermatology” Tianeptine may help prevent hair loss by promoting hair growth and reducing cell death.
8 citations
,
April 2023 in “Cureus” Stem cells could be a better treatment for hair loss by reactivating dormant hair follicles.
9 citations
,
March 2019 in “Scientific reports” Temporary ROS production in cultured human hair follicles promotes growth and stem cell activation.
31 citations
,
August 2000 in “Journal of Investigative Dermatology” Stem cells are key for hair follicle recovery.
June 2022 in “bioRxiv (Cold Spring Harbor Laboratory)” ILC1-like cells can cause alopecia areata by attacking hair follicles.
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.
9 citations
,
August 2023 in “Journal of Investigative Dermatology” IL-15 helps hair grow longer and stronger by extending the growth phase and reducing cell death.
205 citations
,
March 2012 in “Science Translational Medicine” PGD2 stops hair growth and is higher in bald men with AGA.
159 citations
,
December 2007 in “American Journal of Pathology” Stress-related substance P may lead to hair loss and negatively affect hair growth.
19 citations
,
December 2023 in “Journal of Investigative Dermatology” Scalp hair follicle microbes affect hair health and could be used for treatments.
17 citations
,
September 2020 in “Inflammation and Regeneration” WNT activation in scalp fibroblasts boosts hair growth by increasing FGF9.
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.
November 2024 in “International Journal of Molecular Sciences” Hair helps prevent scalp skin cancer by supporting immune protection.
November 2022 in “Journal of Investigative Dermatology” Butyrate helps hair grow longer, improves hair cell health, increases pigment production, and boosts hair's natural defenses.
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.