June 2026 in “Studia Biologica” This study investigates the role of microflora and grease in the felting of wool in Ukrainian Carpathian Mountain sheep. It finds that felted wool has higher sweat content and alkalinity, promoting bacterial and mold growth, which reduces wax content. There are significant changes in the fleece's fatty acid composition, including increased erucic acid and decreased cerotic acid, which may act as a natural disinfectant. Felted wool has a lower proportion of saturated fatty acids and a higher proportion of unsaturated fatty acids, making it more susceptible to peroxide oxidation. These changes in the fleece environment directly impact the felting process.
20 citations
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July 2006 in “Annals of Anatomy - Anatomischer Anzeiger” The 15th-century Korean mummy's hair was well-preserved due to a protective lime-soil coating.
15 citations
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June 2019 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.
January 2026 in “Colloids and Surfaces B Biointerfaces” A silicone treatment makes damaged hair more water-resistant and stronger.
January 2012 in “Yearbook of Dermatology and Dermatologic Surgery” Electric current quickly reduces hand sweating but the effect doesn't last long.
1 citations
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December 1972 in “Journal of Colloid and Interface Science” Ethanol spreads well on hair at low humidity but less so at higher humidity due to water condensation.
January 2011 in “Journal of Society of Cosmetic Chemists of Japan” 18-MEA and SPDA can restore damaged hair's smoothness and reduce frizz.
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.
112 citations
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September 1968 in “PubMed” Hot comb use can cause permanent hair loss on the scalp.
11 citations
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January 2022 in “Methods in cell biology” 
September 2017 in “Journal of Investigative Dermatology” Aging causes sweat glands to shrink and move upward, leading to less elastic skin and more wrinkles.
The mutation helps mice handle heat better without affecting hair growth.
2 citations
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January 1981 High temperatures and certain chemicals can significantly change the amino acid content in human hair.
Hydrophobic modifications make human hair less affected by water.
Skin ages and changes due to sun, wind, and aging, causing dryness, thinning, and hair loss.
15 citations
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July 2002 in “Australasian Journal of Dermatology” Two plywood factory workers developed contact dermatitis from phenol-formaldehyde resin, a known allergen.
November 2014 in “The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology” Most participants had dry skin and scalp issues, needing more research.
November 2025 in “Veterinary and Animal Science” Camel hair structure, not color, helps camels stay cool in the desert.
7 citations
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October 2019 in “Frontiers in bioengineering and biotechnology” Fusion proteins can protect hair from heat damage.
January 2012 in “Jounal of The Korean Society of cosmetology” Applying conditioner mid-treatment reduces hair damage during perms.
24 citations
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January 2023 in “Frontiers in Medicine” Moist Exposed Burn Ointment speeds up healing of diabetic wounds.
2 citations
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March 2018 in “ACS Sustainable Chemistry & Engineering” Heating human hair creates hollow microtubes with smooth surfaces.
6 citations
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June 2023 in “Journal of the European Academy of Dermatology and Venereology” Inflammation damages sweat ducts, causing sweat gland injury.
May 2023 in “Jurnal farmasi sains dan praktis” The hair tonic with cinnamon oil and coconut oil was stable and caused very mild irritation.
February 2025 in “Brazilian Journal of Hair Health” The Brazilian candle flame technique can damage hair by melting the cuticle and exposing the cortex.
1 citations
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May 2006 in “Thyroid Research and Practice” Skin can become dry and thick in hypothyroidism.
May 2026 in “International Journal of Cosmetic Science” UV radiation damages hair similar to bleaching, but double bleaching causes more severe protein degradation.
April 2023 in “Journal of Investigative Dermatology” Keeping human skin stem cells is easier with low temperatures and mTOR inhibition.
1 citations
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June 2018 in “JAMA Dermatology” Vitamin C was found to effectively treat prickly heat in children.