8 citations
,
January 2016 in “Journal of fiber science and technology” Bleaching hair increases cysteic acid levels in a predictable way.
24 citations
,
April 2016 in “Experimental Dermatology” Chemical treatments like dyeing, perming, and bleaching damage hair by altering amino acids and lipids.
30 citations
,
September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
2 citations
,
September 2004 in “International Journal of Cosmetic Science” Hair quality is genetically determined and linked to its composition and strength.
36 citations
,
October 2014 in “Langmuir” Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.
24 citations
,
January 2009 in “International Journal of Trichology” Sunlight exposure ages hair, making it brittle, stiff, and dry.
13 citations
,
March 2010 in “International Journal of Cosmetic Science” Hair coloring increases copper and calcium uptake, damaging hair and reducing shine.
11 citations
,
January 2006 in “Journal of the American Leather Chemists Association” Oxidizing agents break down keratin in wool and hair, causing swelling and increased solubility.
6 citations
,
January 1988 in “PubMed” Swimming in pools with high copper can turn hair green, especially if hair is damaged.
4 citations
,
May 2014 in “PubMed” Monoethanolamine-based hair colorants can cause more damage to hair than ammonia-based ones.
1 citations
,
June 2016 in “Experimental Dermatology” Metabolomics can identify hair damage markers, but its use in creating treatments is uncertain.
1 citations
,
January 2009 in “Journal of S C C J” Changing disulfide bonds in human hair affects its melting behavior and thermal stability.
May 2026 in “International Journal of Cosmetic Science” Ozonated water damages hair structure and proteins.
September 2025 in “International Journal of Cosmetic Science” Heat and UV exposure damage hair structure by altering keratins.
March 2025 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” Ferulic acid and resveratrol protect hair from chemical and sun damage.
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.
9 citations
,
January 2011 in “Journal of X-ray science and technology” Perming and bleaching damage hair differently, with bleached hair having more cysteic acid in the cuticle.
4 citations
,
August 2014 in “Journal of molecular structure” Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.
3 citations
,
September 2021 in “Data in brief” Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.
3 citations
,
January 2015 in “Sen i Gakkaishi” The new keratin film without KAPs stains better and could help study keratin functions.
February 2025 in “International Journal of Cosmetic Science” Protein carbonylation is a sensitive marker for oxidative damage in hair, especially from light exposure.
January 2014 in “한국미용학회지” UV-A radiation significantly damages semi-permanent dyed hair.
52 citations
,
June 1981 in “International Journal of Dermatology” Oral retinoids are effective for severe skin conditions but require careful use due to side effects.
1 citations
,
October 2020 in “Research Square (Research Square)” Abnormal Wnt signaling in hair follicle stem cells can lead to acne-like cysts.
1 citations
,
December 2021 in “Pakistan biomedical journal” Eating certain seeds may help reduce symptoms of Polycystic Ovary Syndrome.
18 citations
,
January 2008 in “Sen'i Gakkaishi” Thioglycolic acid and L-cysteine change hair structure differently during perms, affecting hair strength and curling efficiency.
19 citations
,
November 2018 in “Nutrients” Annurca apple extract may protect mouse hair from damage by chemotherapy and could help treat hair loss without promoting cancer growth.
18 citations
,
August 2014 in “Lipids” Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.
December 2025 in “Universal library of medical and health sciences.” Amino acids like arginine and cysteine protect hair during chemical treatments, keeping it strong and less brittle.
Water and fatty acids affect hair's surface differently based on hair damage, and models can help understand hair-cosmetic interactions.