10 citations
,
September 2020 in “Biopolymers” Hair's structure and properties change with pH; acidic pH maintains strength and less swelling, while alkaline pH increases water content and swelling.
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
,
June 2018 in “Cosmetics” AMPD is a better and less damaging alternative to ammonium hydroxide for hair bleaching.
May 2026 in “International Journal of Cosmetic Science” This study investigates the impact of ultraviolet (UV) radiation on hair fiber integrity, comparing it to the effects of bleaching. It simulates solar radiation damage over a Brazilian summer and finds that UV exposure causes cuticular damage similar to bleaching, with increased cystic component oxidation and decreased hydrophobicity. After 192 hours of UV exposure, hair shows significant mechanical degradation, with reduced force at 20% elongation and elongation at break, indicating more pronounced damage than chemical oxidation alone. However, the structural protein degradation from double bleaching is more severe than that from UV radiation, despite comparable enthalpy changes after 192 hours of UV exposure.
7 citations
,
January 1995 Silicone pretreatment protects hair from damage and reduces color fading without interfering with bleaching or dyeing.
20 citations
,
January 2003 in “Journal of oleo science” Chemical treatments and daily stresses damage hair, especially the cuticle layer.
23 citations
,
May 2010 in “Surface and interface analysis” Chemical treatments and UV radiation severely damage the lipid layer on hair.
15 citations
,
June 2019 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” Chemical and physical treatments like bleaching, dyeing, and UV radiation damage both Caucasian and Afro-ethnic hair.
5 citations
,
October 2007 in “PubMed” Amino acids in conditioners improve hair strength, hydration, and color retention.
10 citations
,
January 2012 in “Journal of Biological Macromolecules” Keratin film can effectively replace human hair for testing hair damage.
December 2025 in “Biopolymers” Heat worsens damage in chemically treated hair, especially bleached and straightened hair.
1 citations
,
January 1988 Cosmetic treatments after chlorination damage hair more than treatments before.
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.
February 2021 in “Journal of the Korean Society of Cosmetology” Castor oil improves the texture of bleached hair by increasing its strength.
63 citations
,
August 1996 in “Forensic Science International” Cosmetic treatments like bleaching and perming can greatly reduce opiate levels in hair, possibly leading to false-negative drug tests.
3 citations
,
January 2007 in “Journal of health science” The enzymatic method can effectively identify chemical treatments on hair.
NaOH treatment improves hair strength and suitability for textiles.
Chemical treatments weaken hair's thermal stability and structure.
July 2007 in “Clinical Risk” A woman got severe scalp burns from a salon's improper hair bleaching treatment.
20 citations
,
June 2012 in “British Journal of Dermatology” Bleaching hair damages protein structure, especially keratin, leading to weakened hair.
September 2018 in “University of the Arts London Research Online (University of the Arts London)” L-arginine, hydrolysed keratin, and cystine-silanol copolymer can help protect hair from damage during and after bleaching.
25 citations
,
December 2011 in “Surface and interface analysis” Bleaching hair causes significant damage by breaking down proteins and fatty acids.
10 citations
,
May 2020 in “Journal of proteome research” Explosions don't stop hair proteins from being used to identify people.
January 2017 in “Nihon Keshouhin Gijutsushakaishi/Journal of S C C./Nihon Keshouhin Gijutsushakai kaishi” Sunlight and chemical treatments change hair's internal structure differently, needing specific care.
30 citations
,
November 2013 in “PLOS ONE” Androgen receptor signaling causes early aging of cells important for hair growth by damaging their DNA.
2 citations
,
November 2018 in “International Journal of Cosmetic Science” Chamomile extract can protect hair from damage caused by light.
January 2012 in “Else Kröner-Fresenius Symposia” Maintaining DNA integrity in stem cells is crucial to prevent aging and cancer.
January 2011 in “Journal of Society of Cosmetic Chemists of Japan” 18-MEA and SPDA can restore damaged hair's smoothness and reduce frizz.
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.
March 2023 in “Asian journal of beauty & cosmetology” Keratin pretreatment improves the quality of damaged hair during perming.