Recently, developments in the field of cosmetics have led to a renewed interest in hair dyeing. However, damage to the hair during the dyeing process has increased hesitation in attempting hair dyeing. As a result, hair dyes with minimal side effects have been in constant demand, and are being developed. In this study, natural-extract polyphenols, pyrogallol, and gallic acid are coordinated by CuCl in a NaCl aqueous solution to form an oligomer, which creates an ion-channel coating on the hair surface to protect it. This work attempts to develop fast, simple, and damage-free hair-dye ingredients based on pyrogallol and gallic acid. The morphology and elements of polyphenols coated on hair are characterized. The results reveal that the hair is dyed with the polyphenol-based dye reagent successfully. Moreover, the thickness of the dyed hair continuously rises ten times after dyeing. The tensile strength of the dyed hair is also measured, showing an upward and downward trend. These results reflect the fact that pyrogallol and gallic acid are considered to be the essential and functional polyphenols, and can build ion blocks on hair, which can create new multifunctional coating materials.
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http://dx.doi.org/10.3390/ma16041333 | DOI Listing |
Anim Genet
February 2025
Davies Research Livestock Centre, School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, South Australia, Australia.
Sheep have naturally pigmented wool which interferes with dyeing. Selection has been carried out over many years to remove pigment, with substantial success, but most wool still contains some pigment. As an alternative to selection, it has been proposed to take a naturally occurring mutation found in black Suffolk sheep, that blocks wool pigmentation, and introgress it into other breeds.
View Article and Find Full Text PDFChemosphere
November 2024
Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, School of Environment, Henan Normal University, 46 East of Construction Road, Xinxiang, 453007, China. Electronic address:
It is highly anticipated that efforts will be made to raise the level of industrial effluent reclamation on the background of continuously minimizing waste stream based on preconcentration tool. For this purpose, a triple-doped nanocomposite (TFN-tri) membrane through partially alternative doping spiro-structured 2,2'-dimethyl-1,1'-biphenyl-4,4'-diamine dihydrochloride and flexible 4,4'-bipiperidyl dihydrochloride and continuous incorporating of molybdenum disulfide quantum dots was successfully fabricated. With the assistance of self-synthesized biodegradable flocculant pretreatment, raw hairwork dyeing effluent (HDE) was stably recycled up to 95.
View Article and Find Full Text PDFJ Stomatol Oral Maxillofac Surg
October 2024
Gazi university, Faculty of Dentistry, Department of Orthodontics, Bişkek cad. 1. Sok. No: 4 Cankaya, Ankara, Türkiye.
Introduction: The significance of facial aesthetics has been steadily rising, leading people to seek different ways to improve their looks and self-esteem. The study aimed to evaluate the differences in facial satisfaction between participants with straight and convex profiles and the relationship between facial satisfaction and the different styles of self-expression.
Materials And Methods: The study was conducted from 110 extraoral profile photos of female participants.
Sheng Wu Gong Cheng Xue Bao
September 2024
Science Center for Future Foods, Jiangnan University, Wuxi 214122, Jiangsu, China.
Tyrosinase is a copper-containing polyphenol oxidase widely applied in the food, cosmetics, pharmaceutical, and other industries. Currently, the production of commercial tyrosinase primarily relies on extraction from fungi, which has high costs, low purity, low specific activity, and poor stability. The objective of this study is to obtain highly expressed bacterial tyrosinase with potential for industrial applications.
View Article and Find Full Text PDFHeliyon
September 2024
Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea.
As hair dyeing gains popularity across all age groups, concerns about the potential damage caused by chemical treatments are also on the rise. Chemical dyes have a multifaceted impact on hair fibers, affecting their morphology, physical structure, and protein composition. In a comprehensive study, we investigated the alterations in morphological and mechanical properties, as well as the chemical composition of hair fibers following continuous dyeing.
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