August 2005 in “The Journal of Cell Biology” Sgk3 kinase is essential for normal hair growth in mice.
September 2022 in “Translational Andrology and Urology” Finasteride may cause lasting sexual and mental health issues, and genetic screening could help prevent them.
January 2020 in “Advances in Sexual Medicine” Female pattern hair loss does not significantly affect sexual dysfunction.
February 2019 in “IP Indian journal of clinical and experimental dermatology” Continuous use of hair relaxers and curlers can cause hair loss, dryness, dandruff, thinning, greying, and split ends.
June 2010 in “DR-NTU (Nanyang Technological University)” Hair coloring and chlorine change hair strength differently.
11 citations
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April 2022 in “Biophysical Journal” Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.
February 2020 in “Definitions” Telogen Effluvium is a condition where more hair than usual falls out after stress or fever.
1 citations
,
January 2025 in “International Journal of Cosmetic Science” Age-related hair curvature increases due to internal structural changes from grooming.
61 citations
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April 2012 in “British Journal of Dermatology” Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.
Sheep can lose wool quickly due to stress, but it doesn't cause itching or pain.
3 citations
,
May 2011 in “Medical Hypotheses” Transnasal cooling could reveal new insights into various physiological conditions and may be a natural way to transfer heat from the brain.
13 citations
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September 2014 in “Journal of photochemistry and photobiology. B, Biology” UV radiation increases protein loss from hair and reduces hair protein quality.
1 citations
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March 2005 in “International Journal of Cosmetic Science” Twisting hair weakens it, but strength can be recovered at low twist levels.
5 citations
,
November 2002 in “Aesthetic Plastic Surgery” Storing hair follicles at -20°C keeps them good for up to 15 days, which may help with hair transplants.
20 citations
,
April 2002 in “PubMed” Mini rats have thinner skin, more fat, and different hair cycles than Wistar rats due to lower growth hormone levels.
1 citations
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July 2017 in “Hair transplant forum international” Scalp laxity, elasticity, and glidability are important in hair transplants and can predict scar width at the donor site.
The mutation helps mice handle heat better without affecting hair growth.
May 1999 in “Dermatologic Surgery” Using an ultrasonic liposuction machine with different cannula sizes and power settings does not change water temperature.
January 2024 in “Uttar Pradesh journal of zoology” Chemical treatments severely damage hair cuticles, especially in previously treated hair.
July 2023 in “Photodermatology, Photoimmunology and Photomedicine” Infrared radiation can cause skin aging and cancer at high temperatures but may have therapeutic benefits at controlled levels.
November 2024 in “International Journal of Cosmetic Science” Hair absorbs moisture differently based on its structure and treatment, with changes occurring at 30% humidity.
November 2025 in “SKIN The Journal of Cutaneous Medicine” "Dread shed" is common with minoxidil but less so with other hair loss treatments.
January 2018 in “Springer eBooks” Telogen Effluvium causes more hair loss because hair moves to the resting phase too soon.
2 citations
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January 2014 in “Sen i Gakkaishi” The new hair straightening method keeps hair straight permanently by using specific creams and heat.
16 citations
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December 2016 in “Dermatologic Surgery” Higher scalp elasticity leads to wider scars after hair transplantation; a new method to measure elasticity may help predict scar size.
November 2025 in “Journal of Clinical Medicine” The drinkable supplement reduced hair shedding and increased hair growth in women.
3 citations
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December 2021 in “Skin research and technology” Higher hair luminosity and shine mean higher perceived transparency.
January 2017 in “Journal of Cosmetics, Dermatological Sciences and Applications” Chinese women's hair gets thinner and grayer with age, and scalp conditions change, especially after 40.
20 citations
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July 2010 in “Skin Research and Technology” Aging makes hair thinner and rougher, with less clear edges.
3 citations
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August 2008 in “PubMed” Repeated digital perming with sodium thioglycolate lotion significantly damages hair protein and structure.