June 2021 in “Journal of emerging technologies and innovative research” Onion and Aloe vera can help protect hair from damage caused by hair dyes.
26 citations,
February 2009 in “Drug Development Research” 17α-estradiol is a safe estrogen that might protect the brain and doesn't cause feminization, needing more research for treating brain diseases.
19 citations,
January 2009 in “International review of cell and molecular biology” Hair's strength and flexibility come from its protein structure and molecular interactions.
42 citations,
January 2011 in “Journal of Biomedical Optics” Infrared and Raman imaging can non-destructively analyze hair structure and help diagnose hair conditions.
25 citations,
May 2019 in “Heliyon” Hair treatments cause significant structural changes, especially with excessive heat, regardless of ethnicity.
June 2024 in “Molecules/Molecules online/Molecules annual” Platycladus orientalis flavonoids protect balding hair from UV damage and slow hair color change.
71 citations,
May 2006 in “The journal of investigative dermatology/Journal of investigative dermatology” TTD hair brittleness is caused by multiple structural abnormalities.
1 citations,
December 2022 in “Middle East Journal of Science” Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.
7 citations,
October 2019 in “Frontiers in bioengineering and biotechnology” Fusion proteins can protect hair from heat damage.
18 citations,
January 1978 in “Advances in experimental medicine and biology” Hair cystine levels may indicate protein malnutrition, but more research is needed.
59 citations,
May 2017 in “Scientific reports” ZDHHC13 is important for normal liver function and metabolism, affecting mitochondrial activity.
3 citations,
January 2009 in “Sen'i Gakkaishi” Using both TGA and DTDG in hair straightening reduces hair damage compared to using TGA alone.
5 citations,
September 2018 in “International journal of genomics” Genetic mutations that disrupt homocysteine breakdown lead to increased damage in mouse hair keratin.
11 citations,
February 2018 in “Amino acids” Copper and iron cause keratin damage in hair by converting methionine to homocysteine.
26 citations,
September 1990 in “Ophthalmology” The study found no common cause for a girl's crystalline cataract and uncombable hair, suggesting their co-occurrence might be coincidental.
1 citations,
December 2023 in “Environmental pollution” Hair analysis shows infants and mothers in north-western Spain are exposed to environmental pollutants, with factors like diet and residence affecting pollutant levels.
4 citations,
January 2015 in “Sen'i Gakkaishi” Hair and wool strength is affected by the number and type of bonds in their protein structures, with hair having more protein aggregates than wool.
51 citations,
September 2012 in “Biomacromolecules” Disulfide bonds make keratin in hair stronger and tougher.
1 citations,
December 2012 in “PubMed” Permanent wave treatment with thioglycolic acid changes hair structure by altering disulfide bonds.
12 citations,
June 2011 in “Journal of applied polymer science” L-phenylalanine and hydrolyzed eggwhite protein deeply penetrate human hair.
11 citations,
April 2022 in “Biophysical Journal” Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.
6 citations,
April 2005 in “Journal of dermatological science” The study found nine new hair protein genes in human hair follicles.
November 2022 in “International journal of trichology” Glyoxylic acid straighteners cause more protein loss but have similar hair strength effects as traditional alkaline straighteners.
3 citations,
January 2019 in “International Journal of Trichology” The balance of thiol-disulfide in women with hair loss is affected but not damaged.
13 citations,
September 2014 in “Journal of photochemistry and photobiology. B, Biology” UV radiation increases protein loss from hair and reduces hair protein quality.
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.
25 citations,
December 2011 in “Surface and interface analysis” Bleaching hair causes significant damage by breaking down proteins and fatty acids.
August 2024 in “Cosmetics” K18® and Olaplex® both effectively repair bleached hair, improving its strength, smoothness, and overall health.
45 citations,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
52 citations,
February 2005 in “Biopolymers” Chemical hair straightening changes hair proteins and mostly fixes broken bonds.