6 citations
,
March 1991 in “Journal of Radioanalytical and Nuclear Chemistry” Manganese levels in hair may be linked to multiple sclerosis.
4 citations
,
November 1968 in “Textile research journal” Hair fibers may have a unique, non-protein sheath not previously identified.
24 citations
,
June 2020 in “Industrial Crops and Products” Activated carbon fibers from Metaplexis japonica seed hair are highly effective for removing the dye methylene blue from water.
3 citations
,
January 2021 in “ScienceAsia” Using an enzyme and keratin treatment can significantly repair and strengthen damaged hair.
January 2026 in “International Journal of Cosmetic Science” Upcycled pineapple biopolymer is effective and eco-friendly for skincare, suncare, and haircare.
Chemical treatments weaken hair's thermal stability and structure.
9 citations
,
January 1981 Nucleophilic reagents break down hair keratin, forming more lanthionine and lysinoalanine than in wool.
December 2023 in “Sains Malaysiana” The enzyme Rand protease works well for leather dehairing and its stability is important, with Leu75 playing a key role.
Hair coloring and bleaching can permanently break down hair protein and temporarily change its properties.
2 citations
,
January 1981 High temperatures and certain chemicals can significantly change the amino acid content in human hair.
7 citations
,
February 1998 in “Polymer journal” Keratin structure in hair is stable at pH 5-6 but disrupts between pH 6-7.
3 citations
,
December 2020 in “Skin Appendage Disorders” Genetic testing confirmed a rare disorder causing hair loss and vision problems in a Saudi family, stressing its importance for diagnosis and counseling.
March 2026 in “Skin Appendage Disorders” Telogen effluvium is linked to low ferritin and vitamin D levels.
Low ferritin and vitamin D levels are linked to hair loss, suggesting the need for personalized nutrition and diagnostics.
Low ferritin and vitamin D levels are linked to hair loss.
January 2026 in “International Journal of Medicine in Developing Countries” Both hormonal and non-hormonal therapies improve hair growth in women, but non-hormonal methods may be more effective with fewer side effects.
January 2025 in “Skin Appendage Disorders” Herbal remedies may help hair growth, but more research is needed.
November 2023 in “Advances in clinical medical research & healthcare delivery”
July 2023 in “Endocrinology, diabetes & metabolism case reports” Sertoliform endometrioid carcinoma of the ovary, though rare, has a good prognosis when treated early.
November 1993 in “PubMed” Hirsutism, excessive male-pattern hair in women, can be caused by high androgens or skin sensitivity, diagnosed by testosterone levels, and treated with hair removal and hormone therapy.
34 citations
,
April 2012 in “Molecular Biology Reports” The enzyme from Bacillus cereus can be used in detergents and leather processing.
Many women with PCOS in Saudi Arabia suffer from depression and anxiety.
July 2021 in “Scholars Journal of Medical Case Reports” Woodhouse-Sakati Syndrome can include unique symptoms like liver issues and low growth hormone.
April 2022 in “SDÜ Tıp Fakültesi Dergisi” Sodium benzoate at higher doses can harm kidney and liver functions and cause oxidative stress and DNA damage.
18 citations
,
July 2015 in “Journal of cosmetic dermatology” Straightening and coloring hair, especially with sodium hydroxide, greatly increases protein loss.
February 2025 in “International Journal of Cosmetic Science” Protein carbonylation is a sensitive marker for oxidative damage in hair, especially from light exposure.
October 2024 in “UNESP Institutional Repository (São Paulo State University)” Straightening and dyeing damage hair structure.
40 citations
,
September 2004 in “Biomacromolecules” The Glu413Lys mutation in keratin affects hair stability, while Glu413Asp does not.
November 2022 in “International journal of trichology” Glyoxylic acid straighteners cause more protein loss but have similar hair strength effects as traditional alkaline straighteners.
4 citations
,
May 2014 in “PubMed” Monoethanolamine-based hair colorants can cause more damage to hair than ammonia-based ones.