19 citations
,
July 2018 in “ACS biomaterials science & engineering” Bleaching and combing damage hair's surface and mechanical properties.
NaOH treatment improves hair strength and suitability for textiles.
November 2025 in “Cosmetics” Rice germ oil improves hair health, but adding ferulic acid offers limited benefits and may worsen chemically damaged hair.
May 2024 in “International Journal of Cosmetic Science” Disulfide bonds are crucial for hair's strength, especially when wet.
Chemical treatments weaken hair's thermal stability and structure.
6 citations
,
March 1998 in “Textile Research Journal” Chemical treatments can change the scale heights of wool and cashmere fibers, affecting their identification.
December 2025 in “Cosmetics” The bio-based complex effectively repairs and protects chemically damaged hair.
Different treatments change the strength and flexibility of human hair.
August 2023 in “Journal of Health and Beauty” K-30 treatment restores protein and weight in damaged hair, making it similar to healthy hair.
11 citations
,
June 2018 in “Annales de dermatologie et de vénéréologie” Hair care products can cause skin irritation and allergies.
April 2017 in “Journal of Investigative Dermatology” 10% carbamide peroxide is safe and effectively reduces mild to moderate acne.
1 citations
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November 2012 in “International Journal of Dermatology” L'Oréal's research and workshops have advanced understanding and tailored cosmetics for African hair and skin.
Cryotherapy is the best depigmentation method for vitiligo but needs an expert to perform it.
July 2007 in “Clinical Risk” The claimant sued for negligence after a hair treatment caused harm and distress, and the defendant responded after legal action started.
51 citations
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March 2001 in “Clinics in dermatology” Bleaching damages hair, making it rougher and weaker.
November 2024 in “Majalah Farmasetika” The natural hair dye gel with 12% Eleutherine bulbosa extract effectively colors bleached hair dark brown and is stable and non-irritating.
Melanin-rich skin has unique challenges in diagnosing and treating skin diseases.
Hair care products can cause skin irritation and allergies.
5 citations
,
April 2005 in “Journal of applied polymer science” PEI diffuses into hair at a constant rate, and urea speeds up this process.
12 citations
,
June 2011 in “Journal of applied polymer science” L-phenylalanine and hydrolyzed eggwhite protein deeply penetrate human hair.
5 citations
,
January 1990 in “Journal of Society of Cosmetic Chemists of Japan” Permanent wave lotion can extract proteins from hair, especially when pH is higher, and repeated treatments or bleaching can damage hair.
4 citations
,
November 1968 in “Textile research journal” Hair fibers may have a unique, non-protein sheath not previously identified.
January 2025 in “Conservation Physiology” Bear hair grows 0.10 to 1.05 mm per day, varying by individual and season.
1 citations
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November 2022 in “Molecules/Molecules online/Molecules annual” Low-molecular weight hyaluronate can make damaged hair stronger.
4 citations
,
October 2007 in “PubMed” Polyquaternium-70 shampoo is best for reducing frizz.
January 2008 in “Chinese Journal of Aesthetic and Plastic Surgery” Hair-derived material is safe and effective for skin filling.
32 citations
,
March 2006 in “PubMed” Eflornithine cream slows facial hair growth and works well with other treatments.
8 citations
,
December 2003 in “Materials Research-ibero-american Journal of Materials” Polyquaternium 7® builds up on hair, improving its look and feel, and AFM is good for measuring these changes.
2 citations
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November 2018 in “International Journal of Cosmetic Science” Chamomile extract can protect hair from damage caused by light.
July 2025 in “Scientific Reports” Fermented grapeseed oil effectively repairs and protects chemically damaged hair.