June 2017 in “University of the Arts London Research Online (University of the Arts London)” Polymers help reduce damage and improve bleached hair when used during or after bleaching.
2 citations
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January 1981 High temperatures and certain chemicals can significantly change the amino acid content in human hair.
January 2017 in “Clinical approaches and procedures in cosmetic dermatology” Cosmetic procedures can harm hair, but damage can be minimized with knowledge and care; however, once hair is damaged, it cannot be reliably repaired.
January 2001 in “Zhongguo linchuang jiepouxue zazhi” Human hair keratin may help repair spinal cord injuries.
June 2025 in “International Journal of Cosmetic Science” Keratin-encapsulated liposomes effectively repair and protect UV-damaged hair.
April 2017 in “Journal of Investigative Dermatology” Chemotherapy and radiation therapy cause skin and hair damage by altering gene expression and signaling pathways.
June 2024 in “ChemBioChem” Replenishing free 18-MEA can help restore damaged hair surfaces.
1 citations
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January 2013 in “Chronicles of young scientists” Immuno-cosmeceuticals from chicken egg yolk can effectively repair and improve damaged hair.
1 citations
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September 2008 in “International Journal of Cosmetic Science” Using chelants in hair dye reduces fiber damage by preventing harmful radicals.
January 2001 in “China Surfactant Detergent & Cosmetics” Both conditioners help protect hair from perm damage, but their effectiveness varies.
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.
30 citations
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September 2018 in “International Journal of Cosmetic Science” Bleaching hair causes severe structural and chemical damage, including protein loss and oxidation.
20 citations
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July 2010 in “Skin Research and Technology” Aging makes hair thinner and rougher, with less clear edges.
May 2026 in “International Journal of Cosmetic Science” Ozonated water damages hair structure and proteins.
September 2025 in “Sahel Journal of Life Sciences FUDMA” Chemical hair straighteners can severely damage hair and scalp with repeated use.
January 2026 in “International Journal of Biological Macromolecules” Small KP peptide improves hair without reducing agents, while larger proteins need them for better results.
Thermal straightening can damage ethnic hair and may pose health risks.
November 2025 in “Repositorio Comunidad Politecnico Grancolombiano” Milagros enterprise Group S.A.S. plans to expand globally by exporting its Professional Intensive Repair Mask to Mexico, France, and the U.S.
8 citations
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January 2009 in “Transactions of the Materials Research Society of Japan” Water-soluble wool keratin can protect human hair from damage during treatments.
70 citations
,
June 1998 in “Polymer” Permanent waving damages hair by disrupting its keratin structure.
5 citations
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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.
36 citations
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July 2019 in “Journal of Materials Science Materials in Medicine” Human hair keratin helps repair nerve damage in rats.
3 citations
,
January 2004 in “Sen i Gakkaishi” DTDG in hair treatments reduces damage and preserves hair structure.
Water and fatty acids affect hair's surface differently based on hair damage, and models can help understand hair-cosmetic interactions.
November 2024 in “Biophysical Chemistry” Hair structure changes immediately during perm treatment, with initial damage partially restored later.
7 citations
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September 2020 in “International Journal of Cosmetic Science” Different sizes of keratin peptides can strengthen hair, with smaller ones possibly increasing volume and larger ones repairing damage.
10 citations
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February 2018 in “Royal Society Open Science” Modified wheat protein in shampoo repairs and smooths damaged hair effectively.
May 2026 in “International Journal of Cosmetic Science” A plant-based treatment from Avena strigosa seeds effectively repairs and strengthens damaged hair.
5 citations
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September 2018 in “International journal of genomics” Genetic mutations that disrupt homocysteine breakdown lead to increased damage in mouse hair keratin.
Perms can damage hair and scalp, so proper assessment and care are essential.