Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.
April 2023 in “CRC Press eBooks” Hair care products mainly work on the hair's surface and need professional guidance for use.
January 2020 in “Indian dermatology online journal” Hair styling products can damage hair over time.
November 2017 in “Koubunshi rombunshuu/Kōbunshi ronbunshū” Hematin in shampoo helps repair and straighten damaged hair.
Hair fibers degrade and change color in very basic water.
January 2013 in “Sen'i Gakkaishi” Microfibrils are key for permanent waves, and hydrolyzed keratin improves wave formation and hair condition.
September 2024 in “Heliyon” Repeated hair dyeing significantly damages hair.
December 2023 in “Journal of molecular structure” Hair treatments and dehydration affect hair's lipid and protein behavior, influencing its flexibility and appearance.
June 2023 in “Experimental dermatology” Pubic hair has a thicker, more protective outer layer than scalp hair, possibly due to evolution.
March 2023 in “Asian journal of beauty & cosmetology” Keratin pretreatment improves the quality of damaged hair during perming.
Coconut oil helps protect and improve damaged hair.
May 2022 in “Experimental dermatology” Trichothiodystrophy hair is structurally abnormal with protein and organization issues.
February 2019 in “PubMed” The research found that twisting hair fibers can show changes in stiffness and damage, and help tell apart different hair treatments.
August 2018 in “Journal of The American Academy of Dermatology” Aging significantly affects the hair and scalp of nonbalding Caucasian women, with changes that differ from male pattern baldness.
January 2018 in “프로그램북(구 초록집)” Ceramide-based essence cream improves damaged hair.
July 2016 in “Indian journal of science and technology” Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.
March 2010 in “Cosmetic Dermatology” Hair straightening methods have advanced to improve effectiveness and reduce damage, but still rely on heat and chemicals.
January 2009 in “Journal of Zhengzhou University” LAIC cream can improve acne by making skin thinner and softer.
CDPDFM can improve acne symptoms in rabbit ears.
Different treatments change the strength and flexibility of human hair.
August 2005 in “Microscopy and Microanalysis” Polymethylene wax in hair relaxers makes hair smooth and shiny with less damage.
December 1988 in “Anatomia, Histologia, Embryologia” Frequent hair dye use caused significant hair and skin damage and affected the dogs' behavior.
62 citations,
January 2004 in “The journal of investigative dermatology/Journal of investigative dermatology” A second domain of high sulfur KAP genes on chromosome 21q23 is crucial for hair structure.
51 citations,
January 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” Scientists discovered a unique hair protein, KAP24.1, with a special structure, found only in the upper part of hair cuticles.
47 citations,
June 1996 in “International Journal of Legal Medicine” Hair analysis for drugs needs a better understanding of how drugs enter hair, considering factors like hair structure and pigmentation.
40 citations,
February 2002 in “International Journal of Dermatology” Permanent hair dye damages hair but it mostly recovers after 8 weeks; using certain hair care products can help repair it.
36 citations,
August 2011 in “Journal of dermatological science” Human hair has a protective lipid layer that can be damaged by moisture and treatments, affecting hair growth and health.
30 citations,
November 2005 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” The lipid in human hair follicles acts as a barrier, similar to the skin's lipid layer.
25 citations,
February 2007 in “Forensic science international” Different hair cleaning methods caused varying levels of damage to the hair's outer layer.
23 citations,
August 2019 in “Proceedings of the National Academy of Sciences of the United States of America” Pollution exposure speeds up hair damage.