45 citations
,
December 2006 in “Biopolymers” Permanent waving weakens hair by altering its protein structure.
36 citations
,
April 2013 in “Cell and Tissue Research” Bone-marrow and epidermal stem cells help heal wounds differently, with bone-marrow cells aiding in blood vessel formation and epidermal cells in hair growth.
22 citations
,
February 2013 in “Wound Repair and Regeneration” Mice genetically modified to produce more CD109 in their skin had less inflammation and better healing with less scarring.
13 citations
,
January 1995 in “Journal of the American Institute for Conservation” Researchers developed a less damaging way to extract red dyes from wool using EDTA and DMF, preserving the fiber's strength for further analysis.
Human hair can almost fully recover its structure within about 1,000 minutes after being stretched.
11 citations
,
April 2022 in “Biophysical Journal” Disulfide bonds in keratin fibers break more easily under stress, especially when wet, affecting fiber strength.
24 citations
,
September 2002 in “Dermatologic Surgery” The study found that hair follicles are above muscle connections in the scalp, which may help protect stem cell areas.
3 citations
,
February 2023 in “ACS omega” Grape seed oil improved hair quality the most, followed by rosehip and safflower seed oils, and reduced damage from shampoo.
January 2026 in “Colloids and Surfaces B Biointerfaces” A silicone treatment makes damaged hair more water-resistant and stronger.
February 2022 in “Fibers” Scientists created a non-toxic, sugar-based hair product that can style hair without damage.
23 citations
,
November 2021 in “Journal of Bionic Engineering” The new wound dressing helps skin heal faster and fights infection.
8 citations
,
April 2017 in “Journal of The Royal Society Interface” Giant axonal neuropathy changes the structure of keratin in human hair.
7 citations
,
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.
December 2025 in “Sustainable Chemistry One World” Mangosteen waste can be used as an eco-friendly natural hair dye, producing a lasting reddish color and strengthening hair.
September 2024 in “Heliyon” Repeated hair dyeing significantly damages hair.
1 citations
,
June 2023 in “Skin Research and Technology” Hair-coating shampoos dye better initially, but hair-oxidation shampoos keep color longer and may damage hair more.
April 2025 in “Pharmaceuticals” APA is a promising new compound for repairing damaged hair, outperforming Olaplex® in strength and elasticity.
October 2024 in “Dermatologica Sinica” ECM changes may play a role in hair loss, with differences between males and females.
June 2024 in “Molecules/Molecules online/Molecules annual” Platycladus orientalis flavonoids protect balding hair from UV damage and slow hair color change.
5 citations
,
November 2024 in “Frontiers in Nutrition” LB-P9 supplements improve hair health and satisfaction without side effects.
1 citations
,
January 2024 in “Scientific reports (Nature Publishing Group)” Human hair was used to make biodegradable plastic films that could be useful for packaging and disposable products.
October 2024 in “Cosmetics” ATG effectively reduces hair frizz without damaging hair strength.
July 2023 in “Research Square (Research Square)” Skin's uneven surface and hair follicles affect its stress and strain but don't change its overall strength, and help prevent the skin from peeling apart.
22 citations
,
September 2019 in “ACS omega” The new nanocomposite films are stronger, protect against UV, speed up wound healing, and are antibacterial without being toxic.
13 citations
,
May 2016 in “International journal of biological macromolecules” Keratin's mechanical properties are influenced by hydrogen bonds and secondary structure, and can be improved with the SPD-2 peptide.
7 citations
,
October 1963 in “Textile Research Journal” Merino wool fibers change shape with moisture, while human hair shape stays the same.
6 citations
,
December 2018 in “International Journal of Cosmetic Science” Mexican women's hair is between Asian and Caucasian hair in thickness and shape, with varied strength and some damage.
May 2023 in “Current Applied Science and Technology” Higher power CO2 laser causes more severe skin burns and damage.
4 citations
,
May 2019 in “Zeitschrift für Naturforschung C” Ishige sinicola extract helps bone-building cells grow and mature, which could aid in treating osteoporosis.
2 citations
,
March 2005 in “International Journal of Cosmetic Science” Human hair structure varies by ethnicity, and certain treatments can improve hair condition and appearance.