September 2018 in “PubMed” Hair becomes thinner, grayer, and may fall out more as people get older, and styling habits can worsen these effects.
January 2018 in “Springer eBooks” Lasers are FDA-approved for permanent hair reduction, not removal, and more research is needed to improve treatments.
January 2013 in “Transactions of the Materials Research Society of Japan” CMADK reduces hair damage from bleaching and permanent waving.
Rosehip extract improves hair treatment and waving efficiency with cysteine but not with thioglycolate.
Frizzy hair is fragile and can lead to hair loss and damage if not properly cared for.
December 2000 in “Kirk-Othmer Encyclopedia of Chemical Technology” Hair care products are regulated, with shampoos, conditioners, dyes, and styling products designed for cleaning, enhancing, and maintaining hair.
Anti-keratin antibody from cow milk makes damaged hair stronger and less likely to break.
January 1991 in “Journal of Society of Cosmetic Chemists of Japan” Hair treatments can damage hair by changing its chemical content.
April 2018 in “Journal of Investigative Dermatology” Arrector pili muscle regulates hair follicle stem cells, DNA methylation needed for hair cycling, and Wnt/B-catenin signaling starts hair growth.
April 2017 in “Journal of Investigative Dermatology” Stem cells can create hair follicles, potentially treating permanent hair loss, and healthy skin and hair depend on mitochondrial function and special fats.
January 2004 in “Linchuang pifuke zazhi” A man lost hair permanently from a salon burn, and surgery was needed to fix the scar.
May 2010 in “International Journal of Cosmetic Science” Mercaptans make hair more prone to damage, with reduced hair being more affected than permed hair.
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.
67 citations
,
May 2010 in “Journal of The American Academy of Dermatology” Some chemotherapy can cause permanent hair loss.
18 citations
,
July 2015 in “Journal of cosmetic dermatology” Straightening and coloring hair, especially with sodium hydroxide, greatly increases protein loss.
16 citations
,
March 2017 in “Bone Marrow Transplantation” Some children who had stem cell transplants developed permanent hair loss, especially when treated with a drug called busulphan.
12 citations
,
March 2020 in “Journal of Bioactive and Compatible Polymers” Nanoparticles show potential for controlled release of hair loss drugs, improving treatment effectiveness.
12 citations
,
August 2016 in “Biomedical Chromatography” A new method accurately measures clobetasol propionate in hair and skin.
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.
5 citations
,
February 2010 in “Drug development and industrial pharmacy” Vesicles made of behenyltrimethylammonium chloride and stearic acid can triple the skin absorption of hinokitiol, which may help with hair growth.
3 citations
,
May 2023 in “PLoS ONE” The professional laser is more effective than the home-use laser for hair reduction.
2 citations
,
January 1995 in “Nihon Keshouhin Gijutsushakaishi/Journal of S C C./Nihon Keshouhin Gijutsushakai kaishi” Ethyl Carbitol is the best at preventing split ends in permed hair.
2 citations
,
March 2021 in “Cutis” Some breast cancer treatments, like taxanes, can cause long-term hair loss.
2 citations
,
December 2013 in “Cancer Research” Some early breast cancer patients have long-term hair loss after chemotherapy, especially older and postmenopausal women.
November 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Oxidative dyes damage hair more than semi-permanent dyes, but new technologies help protect hair while coloring.
January 2024 in “RSC pharmaceutics” Removing the outer skin layer increases drug absorption and offers non-invasive treatment options, with some methods allowing for quick skin recovery.
Natural α-hydroxyl acids cause skin exfoliation by activating TRPV3 channels.
January 2006 in “Carl von Ossiezky University of Oldenburg” Unpigmented keratinocytes absorb substances faster, while melanocytes bind more strongly to melanin.
8 citations
,
May 2020 in “International journal of biological macromolecules” Certain treatments can increase protein binding to natural hair but are less effective on permed hair.
21 citations
,
July 2015 in “International Journal of Nanomedicine” Increased liposome fluidity boosts skin penetration of sodium fluorescein.