4 citations
,
November 2004 in “Clinical and Experimental Dermatology” Hair length and thickness are related, with thickness peaking at about a quarter of the hair's maximum length.
10 citations
,
September 2020 in “Metabolites” Hair color and length affect metabolite profiles in hair, so they should be considered in hair analysis.
April 2024 in “Journal of the American Academy of Dermatology” Low-dose minoxidil helps hair grow longer and thicker in people with short anagen syndrome.
August 2023 in “The Indonesian Biomedical Journal” Rosemary essential oil improved hair growth and thickness in UVB-exposed mice.
136 citations
,
July 2014 in “Proceedings of the National Academy of Sciences of the United States of America” FGF5 gene mutations cause unusually long eyelashes by affecting hair growth regulation.
9 citations
,
February 2021 in “British Journal of Dermatology” Low-dose oral minoxidil increases hair thickness and length in children with a hair disorder called Loose Anagen Hair Syndrome.
9 citations
,
June 2020 in “Animal genetics” Scientists found genes linked to hair length in Brangus cattle that could help breed heat-tolerant cattle.
7 citations
,
March 2022 in “Frontiers in Genetics” The research found specific genes that may cause longer hair in Tianzhu White Yak.
November 2020 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Certain genetic variants in PRLR and PCCA genes may lead to shorter hair in cattle, which could help with heat tolerance.
1 citations
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May 2013 in “Journal of dermatological treatment” Wearing a cast for four weeks makes hair grow longer, thicker, and denser.
January 2023 in “International journal of research publications”
October 2017 Suruhan plant extract may increase hair length but not hair mass in rabbits.
73 citations
,
June 2006 in “Animal genetics” The FGF5 gene determines hair length in dogs.
33 citations
,
February 2016 in “Journal of Experimental Botany” ROOT HAIR SPECIFIC 10 (RHS10) reduces the length of root hairs in Arabidopsis plants.
16 citations
,
June 2009 in “Dermatologic Surgery” The place where hair is transplanted can change its growth rate and length but not its thickness.
1 citations
,
January 2023 in “International Journal of Trichology” Platelet-rich plasma didn't increase hair length but may help keep hair follicles alive.
17 citations
,
April 2011 in “Journal of Investigative Dermatology” Flightless I protein affects hair growth, with low levels delaying it and high levels increasing hair length in rodents.
3 citations
,
October 2016 in “International Journal of Dermatology” Minoxidil treatment increased hair density in a young Asian girl with short anagen syndrome, but didn't improve hair length or thickness.
1 citations
,
January 2021 in “Pakistan journal of zoology” Red fox, golden jackal, and gray wolf hairs have similar features but differ in length, thickness, and inner structure.
3 citations
,
July 2003 in “PubMed” The research found a way to measure hair surface changes by analyzing how light reflects off of it, and determined hair cuticle angles vary by hair length and color.
May 2023 in “Journal of Investigative Dermatology” Adipose Stem Cell-derived Exosomes (ASCE) could potentially be used for hair loss treatment and scalp rejuvenation, as they have shown to increase hair length, thickness, and count, and improve conditions like androgenic alopecia and alopecia areata.
54 citations
,
January 2013 in “BMC Complementary and Alternative Medicine” Thuja orientalis hot water extract may help hair grow by starting the growth phase and improving hair follicle development.
26 citations
,
May 1991 in “Clinical and experimental dermatology” Oral etretinate improved hair length and reduced beading in monilethrix.
A hair growth ointment improved hair length in a family with a genetic hair growth condition.
September 2023 in “Journal of Cosmetic Dermatology” Topical cetirizine may help increase hair length in male pattern baldness and could be an alternative to minoxidil with fewer side effects.
December 2020 in “한국인그리에학회지” Astringent persimmon fruit extract may help increase hair length and coverage without increasing the number of hair follicles.
10 citations
,
December 2019 in “International journal of medicinal chemistry” Chemicals from the plant Dicerocaryum senecioides were found to safely speed up and increase hair growth in mice.
May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.
73 citations
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May 2010 in “Food and Chemical Toxicology” Zizyphus jujuba essential oil can promote hair growth.