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July 2012 in “PubMed” Ceramide-rich liposomes can effectively repair and strengthen damaged hair.
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June 2021 in “Carcinogenesis” Certain hair straighteners and dyes may increase ovarian cancer risk, especially in African American/Black women.
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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.
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July 2022 in “International Journal of Cosmetic Science” Hair moisture behavior helps tell apart different chemical treatments and reveals insights into hair structure.
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November 2014 in “Hair transplant forum international” Low Level Laser Therapy can promote hair growth.
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January 2025 in “International Journal of Cosmetic Science” Age-related hair curvature increases due to internal structural changes from grooming.
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June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
May 2026 in “Applied Spectroscopy” Humidity affects hair structure changes during stretching.
August 2013 in “日本医療薬学会年会講演要旨集” Hair contains complex lipids, including cholesterol and fatty acids, similar to skin.
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August 1984 in “Therapeutische Umschau. Revue thérapeutique” Permanent hair removal with lasers is the most promising treatment for excessive hair growth.
Yak hair stretches mainly due to macromolecules slipping past each other.
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January 1980 in “PubMed” Hair lotions with 17 alpha-estradiol can reduce hair loss but won't regrow new hair.
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January 2010 in “International Journal of Trichology” Loose Anagen Syndrome is a hair condition where hairs can be easily pulled out, mainly affecting young girls, and may improve on its own or with treatment.
The hair masks are safe, stable, and effective for hair care.
March 2010 in “International Journal of Cosmetic Science” Disulfide bonds affect the melting behavior of hair's crystalline structure, but hair retains some stability even after these bonds are broken.
August 2025 in “Clinical Toxicology” Hair-straightening products with glyoxylic acid may cause kidney damage.
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January 1985 Water makes hair more flexible, especially the outer layer.
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May 2011 in “Facial Plastic Surgery Clinics of North America” Laser hair removal is effective for dark hair but needs improvement for nonpigmented or fine hairs.
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June 2006 in “PubMed” Combining laser hair removal with a cream effectively reduced facial hair.
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October 2021 in “Journal of the European Academy of Dermatology and Venereology” The hair lotion reduced hair loss and sped up recovery in women with acute telogen effluvium.
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January 1981 High temperatures and certain chemicals can significantly change the amino acid content in human hair.
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February 2009 in “Journal of Investigative Dermatology” Lipase H is important for hair follicle function and shaping hair fibers.
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January 2020 in “Indian dermatology online journal” Lichen simplex chronicus on the scalp can be diagnosed by specific hair and skin signs and treated with corticosteroids and therapy.
November 2025 in “Contact Dermatitis” Hair straightening products with glyoxylic acid can cause skin irritation and kidney damage.
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August 2011 in “PubMed” Polymeric pretreatments can significantly reduce hair breakage and damage from hot flat irons.