January 2006 in “The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology” Rubus coreanum may help hair growth but not through the tested mechanisms, and none of the herbal extracts help with acne.
April 2000 in “Chinese Journal of Dermatology” Epidermal growth factor (EGF) boosts hair follicle growth and speeds up hair cycle transition.
January 2000 in “Chinese Journal of Dermatology” Ligustrum lucidum may boost hair growth by maintaining key growth factors.
Testosterone and dihydrotestosterone can slow down the growth of certain hair follicle cells.
September 1984 in “Journal of Biological Education” Human hair growth involves active, resting, and intermediate phases, and examining plucked hairs can teach students about hair biology and diseases.
Frontal hair in male pattern baldness shows reduced growth and thickness.
161 citations
,
June 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair stops producing melanin as it transitions from the growth phase to the resting phase.
154 citations
,
October 1996 in “Proceedings of the National Academy of Sciences of the United States of America” Estrogen affects hair growth and skin cell multiplication.
26 citations
,
March 1986 in “Clinical and Experimental Dermatology” Scalp hair grows at 0.37 mm/day, forearm hair at 0.18 mm/day, and thigh hair at 0.30 mm/day, with no significant differences found in people with certain hair conditions.
23 citations
,
January 2018 in “BMC genomics” Vimentin is involved in regulating the hair growth cycle in Inner Mongolian Cashmere goats.
17 citations
,
August 1979 in “Journal of The American Academy of Dermatology” A new staining method helps tell growing from resting hairs to diagnose hair loss.
13 citations
,
September 2021 in “Current Issues in Molecular Biology” Dexpanthenol helps human hair follicle cells grow by preventing aging and death, and by supporting growth signals.
13 citations
,
July 2019 in “PLoS ONE” Deleting podoplanin in mice promotes hair growth by enhancing cell migration.
6 citations
,
January 2017 in “Journal of toxicologic pathology” Rabbit skin with active hair growth shows thicker, redder areas due to larger, more numerous hair follicles and increased blood vessels.
6 citations
,
November 2013 in “International Journal of Radiation Biology” Gamma-rays exposure during the resting phase of hair growth can damage hair regeneration and color in mice.
March 2026 in “Scientific Reports” Ferulic acid may help hair grow by activating certain receptors in cells.
Poly-D,L-lactic acid boosts hair growth in aged skin by activating hair follicle stem cells.
September 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” Freezing gamma-irradiated amniotic fluid may help hair growth and speed up the growth phase.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Estetrol may help prevent hair loss and promote hair growth in women.
August 2018 in “Journal of Investigative Dermatology” Polyunsaturated fatty acids, like arachidonic acid and eicosapentaenoic acid, can promote hair growth and may help treat hair loss.
33 citations
,
January 2006 in “Journal of Dermatological Science” A long-acting Vitamin C derivative helps hair grow by stimulating cells and increasing growth factors.
30 citations
,
December 2014 in “Toxicological Research” Peppermint oil can effectively promote hair growth without being toxic.
21 citations
,
April 2018 in “Journal of Dermatological Science” Cilostazol helps hair grow by making hair root cells grow faster and changing growth factor levels.
13 citations
,
September 2018 in “Scientific Reports” The research found that a complex gene network, controlled by microRNAs, is important for hair growth in cashmere goats.
12 citations
,
December 2009 in “Amino Acids” Putting α-methylspermidine on mouse skin can start hair growth.
3 citations
,
July 2015 in “International journal of pharmacology” Natural plant extracts help prevent hair loss and promote hair growth.
1 citations
,
January 2020 in “Indian journal of dermatology, venereology, and leprology” CD117 and platelet-derived growth factor receptor α may play a role in alopecia areata.
June 2024 in “International journal of molecular sciences” Adenosine complex helps increase hair thickness and density in hair loss.
April 2023 in “Journal of Investigative Dermatology” Ashwagandha nanoparticles help increase hair growth.
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.