23 citations
,
December 1991 in “Annals of the New York Academy of Sciences” Balding scalps slow down hair growth.
21 citations
,
January 2016 in “NeuroImmunoModulation” Hair cortisol levels can indicate stress over the past three months.
11 citations
,
November 2015 in “Skin Research and Technology” Women's hair grows faster and thicker than men's, but hair growth slows for both genders with pattern hair loss.
7 citations
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September 2014 in “European Journal of Dermatology” Thicker hair grows faster; hair loss patients have slower growth.
7 citations
,
May 1979 in “Medical & biological engineering & computing” The trichometer accurately measures hair growth and is easy to use.
1 citations
,
September 2016 in “Brain Behavior and Immunity” Hair cortisol levels can indicate stress and are affected by washing frequency, not cosmetic treatments.
1 citations
,
January 2016 in “Hair therapy & transplantation” Liposomal cepharanthine lotion speeds up hair growth in men with early balding.
January 2025 in “Conservation Physiology” Bear hair grows 0.10 to 1.05 mm per day, varying by individual and season.
April 2024 in “Journal of wildlife diseases” Muskox hair growth rates vary widely, so a single growth rate can't be used for all populations.
May 2023 in “General and comparative endocrinology” Monkey hair cortisol levels are not affected by how fast their hair grows.
Plucked hair follicles grow faster than conventional ones, making them a potentially better option for hair transplants.
Frontal hair in male pattern baldness shows reduced growth and thickness.
26 citations
,
September 1999 in “Canadian Journal of Botany” The RHD4 gene is crucial for consistent root hair growth in Arabidopsis thaliana.
26 citations
,
December 1981 in “British journal of dermatology/British journal of dermatology, Supplement” Cyproterone acetate reduced hair growth in most hirsute females and made hair softer, thinner, and lighter.
4 citations
,
October 2009 in “Skin research and technology” Colorimetry can accurately measure hair growth rates in mice.
5 citations
,
September 2023 in “Pediatric Research”
January 2024 in “Biochemical genetics” The research found specific genes and proteins that affect how fast chickens' feathers grow, which is not solely determined by traditional inheritance patterns.
29 citations
,
May 1975 in “Clinical Endocrinology” Combination therapy significantly reduces testosterone and moderately reduces hair growth in women with hirsutism.
19 citations
,
June 2008 in “Journal of Investigative Dermatology” HPV genes in mice improve ear tissue healing by speeding up skin growth and repair.
4 citations
,
January 2022 in “Journal of nanomaterials” Silver nanoparticles made from Ziziphus nummularia fruit extract promote hair growth and fight bacteria and fungi.
August 2024 in “Siberian Journal of Life Sciences and Agriculture” Melatonin and lyotritone improve hair growth and quality in white rats.
4 citations
,
March 2021 in “Experimental dermatology” Minoxidil increases nail growth more than biotin.
January 2024 in “ResearchWorks at the University of Washington (University of Washington)” LA-ICP-MS effectively measures zinc, lead, and mercury in hair.
October 2019 in “UNESP Institutional Repository (São Paulo State University)” Minoxidil is more effective than biotin for increasing nail growth rate.
April 2023 in “Asian Medical Journal and Alternative Medicine” 2% minoxidil speeds up nail growth more than 5% minoxidil and is safe.
January 2026 in “Journal of Nanomaterials”
1 citations
,
January 2015 in “Trace Elements in Medicine (Moscow)” A 3.75-year-old girl showed that different body organs can grow at different rates.
2 citations
,
May 1981 in “Journal of Animal Science” Hair mineral analysis is not very useful for assessing overall mineral composition in animals.
September 2013 in “Daehan hwajangpum hakoeji/Daehan hwa'jangpum haghoeji” Shampoo with ginseng helped improve hair thickness, density, growth, and reduced hair loss.
8 citations
,
September 2016 in “Asian journal of beauty & cosmetology” Dendropanax morbifera leaf extract could be good for hair growth and cosmetic products because of its antioxidant properties and growth factor effects.