38 citations
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December 2019 in “Iranian Biomedical Journal” Hair follicle stem cells help burns heal faster and stronger.
27 citations
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February 1991 Cuticle damage doesn't affect hair's tensile strength; the cortex is responsible for it.
2 citations
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August 2019 in “International Journal of Cosmetic Science” Older age and certain lifestyles are linked to thinner, weaker hair, while how you see your hair relates to its thickness.
1 citations
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July 2022 in “International journal of trichology” Type 3 hair oil strengthens hair more than coconut oil.
1 citations
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January 1987 in “Journal of Society of Cosmetic Chemists of Japan” The method accurately measures hair damage and strength, revealing effects of cosmetics and metal correlations.
July 2025 in “International Journal of Cosmetic Science” A new 6-point scale reliably measures heat damage to hair from styling tools.
October 2023 in “International journal of research in dermatology” Mintop shampoo improved hair smoothness, shine, and strength after ten washes.
October 2014 in “University of the Arts London Research Online (University of the Arts London)” Protein-derived ingredients can help strengthen bleached hair.
January 2010 in “SÖFW-Journal” A natural moisturizer can make hair stronger.
March 2026 in “ACS Applied Bio Materials” The TO-TF copolymer strengthens damaged hair effectively and sustainably.
March 2020 in “DOAJ (DOAJ: Directory of Open Access Journals)” Hair follicle stem cells improve burn wound healing and strength in rats.
January 2009 in “Chinese journal of Clinical Medicine” 50 citations
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October 2007 in “Archives of Dermatological Research”
45 citations
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December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
39 citations
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January 1979 in “Journal of the Society of Cosmetic Scientists of Korea” Surfactants can protect or harm hair, skin, and nails, depending on their type and use.
31 citations
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December 2012 in “British Journal of Dermatology” Korean women's hair thins, weakens, and greys with age, with mineral and sterol changes.
31 citations
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June 2010 in “Journal of dermatology” Hair bleaching causes significant damage to hair and skin.
30 citations
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November 2012 in “Proceedings of the Royal Society B Biological Sciences” Hard α-keratins stay stiff in water because the surrounding matrix keeps them dehydrated and strong.
22 citations
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February 2013 in “Wound Repair and Regeneration” Mice genetically modified to produce more CD109 in their skin had less inflammation and better healing with less scarring.
13 citations
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September 2017 in “International Journal of Cosmetic Science” Thioglycerol treatment at pH 9.0 with ammonia causes less hair damage and better waving than thioglycolic acid.
9 citations
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July 2014 in “Skin research and technology” Stretching damages Caucasian hair's structure more easily than Asian hair.
5 citations
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May 2022 in “Fashion and Textiles” Hair conditioners with argan oil or camellia oil improve the strength and color of bleached hair.
5 citations
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October 2007 in “PubMed” Amino acids in conditioners improve hair strength, hydration, and color retention.
4 citations
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June 2022 in “Journal of cleaner production” New eco-friendly method strengthens and sets hair using light and causes less damage.
3 citations
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June 2023 in “ACS sustainable chemistry & engineering” The study found a green method for strengthening hair works on all hair colors and is eco-friendly.
3 citations
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June 2019 in “Journal of cosmetic dermatology” Lower pH straighteners change hair more but weaken it.
3 citations
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March 2013 in “Journal of the Society of Cosmetic Scientists of Korea” Transglutaminase can repair damaged hair, making it stronger and shinier.
3 citations
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August 2008 in “PubMed” Repeated digital perming with sodium thioglycolate lotion significantly damages hair protein and structure.
3 citations
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January 2002 in “Springer eBooks” Alkaline hair relaxers damage hair, but cationic and non-ionic polymers can help reduce this damage.
2 citations
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September 2010 in “Journal of the Korea Academia-Industrial cooperation Society” Using 2% collagen in perms reduces hair damage while keeping curls.