research Stability of opiates in hair fibers after exposure to cosmetic treatment
In this study, bleaching and perming were found to significantly reduce opiate concentrations in both spiked and naturally opiate-positive human hair samples.
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research Effect of Disulfide Bonds in Human Hair Fibers on the Melting Behavior of Their Crystalline Structure
This study investigated the effect of peracetic acid treatment on hair fiber structure and found that disulfide bond oxidation altered thermal properties while preserving the α-crystal structure, suggesting different stabilizing interactions in hair fibers.
research Enzymatic Crosslinking of Amino Acids Improves the Repair Effect of Keratin on Hair Fibre
This study found that a bio-based repair solution containing hydrolysed wool keratin, serine, and transglutaminase improved the physical and chemical properties of damaged hair, increasing its strength, flexibility, and thermal stability while offering long-lasting protection against chemical damage.
research Physico-chemical properties of modern cosmetics for styling and their effect on hair structure
This study found that modern styling cosmetics can significantly alter hair structure through changes in interfacial chemistry and cohesion, particularly when applied to already damaged hair.
research Effects of Hair Fibers on Braking Friction Materials
This study found that adding hair fibers to friction materials increased their friction coefficient stability and impact strength while decreasing wear rates, with 1% hair fiber content notably improving performance.
research Skin aging as a mechanical phenomenon: The main weak links
This study suggests that age-related changes in skin elasticity reduce its stability against wrinkling, and anti-aging strategies should focus on addressing elastic mismatches between skin layers.
research Morphology and Properties of Hair
This chapter reviews the chemistry of keratin fibers, which are essential for understanding the structural stability and functionality of mammalian hair and other similar biological materials.
research Bleached Hair as Standard Template to Insight the Performance of Commercial Hair Repair Products
In this study, a bleaching protocol was developed to evaluate hair repair products, revealing that K18® and Olaplex® improve hair brightness and lightness, with distinct impacts on hair fiber properties.
research Dyeing behaviours of amino heterocyclic compounds as blue oxidative hair dye precursors applied to keratin fibres
This study found that 1,2,3,4-tetrahydroquinoline derivatives, particularly N-methyl-7-amino-1,2,3,4-tetrahydroquinoline, may be excellent blue dye candidates for human hair, offering superior color purity, stability, and fastness compared to 2,3-dihydroindoles.
research DEVELOPMENT OF AN EXFOLIATING DERMOCOSMETIC FORMULATION WITH BABASSU FIBERS TO HELP ON THE TREATMENT OF ANDROGENETIC ALOPECIA
This study aimed to develop a dermocosmetic exfoliating formulation using babassu fibers for androgenetic alopecia treatment, but found that although the formulation met sensory standards, it was unstable in sunlight and heat, suggesting a need for optimization before commercialization.
research Solution Blow Spinning of Programmable Biofunctionalized Polymer Fibers
This study reports a method for fabricating biofunctional polymer fibers by using DNA-programmable cell-free protein synthesis integrated through solution blow spinning, enabling in situ protein production and potential applications in respirators, sampling swabs, and other advanced materials.
research CHROMALENS PRECISION MAPPING AS AN INNOVATIVE SYSTEM FOR MICROZONAL HAIR ANALYSIS: STRUCTURE, ALGORITHM, AND COMPARISON WITH CLASSICAL COLORING TECHNIQUES
This article explores the theoretical foundations of the ChromaLens Precision Mapping system for analyzing hair, but it does not present any new experimental findings.
research Microneedle-Assisted Penetration of Fibronectin Nanogels for Enhanced Anti-Aging Healthcare and Diabetic Wound Healing
The study presents the development of fibronectin nanogel microneedles (FNG MNs) designed to enhance tissue penetration and transdermal delivery for anti-aging and diabetic wound healing applications. The FNG MNs, with an average size of 82.0 nm, demonstrate excellent stability, cytocompatibility, and cell penetration capabilities. In a photoaged mouse model, these microneedles effectively restore skin homeostasis by normalizing epidermal thickness, reorganizing collagen and elastin fibers, and reducing inflammation and oxidative stress. In a diabetic wound rat model, FNG MNs promote collagen deposition, hair follicle neogenesis, and angiogenesis while reducing Yes-associated protein expression. These findings suggest that FNG MNs could be a promising formulation for various biomedical applications due to their ability to modulate the extracellular matrix, reduce inflammation, and provide antioxidative benefits.
research Formulation and Characterization of Bromelain containing Anti-Dandruff Shampoo
This study found that an anti-dandruff shampoo containing Bromelain effectively preserves hair fiber integrity, enhances uniformity and lustre, and offers therapeutic benefits for scalp infections and inflammation, making it a safer alternative for dandruff treatment.
research Formulation and Characterization of Herbal Ingredients based Shampoo
This study concluded that sodium lauryl sulfate is very toxic to hair, damaging its structure, while natural conditioners help protect hair integrity and improve consistency and shine.
research Dermoscopy of annular elastolytic giant cell granuloma
This case study reports a female adult patient with annular elastolytic giant cell granuloma on the scalp, observed through dermoscopy showing multiple yellowish/orange follicular dots against an erythemato-whitish background.
research Influence of anionic surfactants on coacervation with cationic guar gum for hair care applications
This study found that a 0.5% cationic guar gum and 0.5% anionic surfactant formulation formed stable coacervates with improved adhesion and coverage on damaged hair, suggesting it may enhance the effectiveness of hair conditioning products compared to other ratios.
research A Raman spectroscopy investigation of the resilience of hair cuticular scales under uniaxial stress
This study investigated the mechanical response of the human hair cuticle to strain and found that cuticular deformation directly corresponded with fiber elongation, revealing significant molecular-level changes in disulfide crosslinks but maintained structural stability, highlighting the role of the cuticle in stress resistance.
research The 'self recovery phenomenon' of oxidized hair
This study found that oxidized hair undergoes time-related structural changes, resulting in improved thermal and mechanical stability over several months after moderate or intense oxidative treatments.
research Improved Humidity-Resistant Hair Straightening Using a Cysteamine-Derived Amino Acid Compound
In this study, incorporating a novel amino acid compound into a hair-straightening formulation improved humidity-resistant straightening and enhanced the surface and mechanical properties of hair fibers, including increased bending stiffness, reduced friction, and better shape retention under high temperature and humidity conditions.
research The Viscoelastic Properties of Chemically Modified alpha-Keratins in Human Hair
This study found that chemically modifying human hair through esterification or disulfide reduction and alkylation affects the hair's viscoelastic properties, including stability, integrity, and response to moisture.
research Correlation Analysis of CXCL10, FOS, HOXC13, and WNT4 Gene Polymorphisms with Key Economic Traits—Initial Population Screening for Jiangnan Cashmere Goats
In this study, researchers reported that specific gene polymorphisms in Jiangnan cashmere goats, particularly SNPs in the HOXC13 and WNT4 genes, were significantly associated with key economic traits like birth weight and yearling weight, providing molecular markers for breeding and enhancing economic trait stability.
research Riboflavin-Sensitized Photo-Acceleration of Food-Grade Genipin Coloration: Kinetic Insights, Mechanistic Analysis, and Application in Rapid Hair Coloration
This study found that genipin-based pigments, accelerated by riboflavin and blue-light photocatalysis, achieved commercial-level hair dye results with enhanced gloss and excellent color retention while reducing cuticle disruption, offering a potentially safer and faster alternative to traditional hair coloration methods.
research In vitro Assembly Properties of Human Type I and II Hair Keratins
This study suggests that specific combinations of human type I and II hair keratins, particularly K35-K85 and K36-K81, have distinct in vitro assembly properties that are significant for macrofibril formation.
research New aspects of the structure of human hair on the basis of optical microscopic observations of disassembled hair parts.
This study discovered previously unknown structures in human hair shafts that may stabilize hair structurally and physicochemically.
research State-of-the-Art Review of Electrospun Gelatin-Based Nanofiber Dressings for Wound Healing Applications
This review discusses the potential of electrospun gelatin-based nanofiber dressings for wound healing and skin regeneration, detailing their properties, enhanced functionalities through crosslinking and bioactive components, and their application in treating challenging wound types like burns and diabetic wounds.
research Homogeneous silver nanoparticle loaded polydopamine/polyethyleneimine-coated bacterial cellulose nanofibers for wound dressing
This research observed that a silver nanoparticle-loaded polydopamine/polyethyleneimine-coated bacterial cellulose dressing effectively inhibited S. aureus infections, reduced inflammation, and promoted wound healing compared with untreated cellulose, demonstrating its potential for treating infected wounds.
research Response to Dr. Korc’s Letter on Mohs Surgery
Dr. Zitelli emphasized that "Mohs surgery" should only be called that when one doctor does both the surgery and pathology.
research Fiber-Safe Extraction of Red Mordant Dyes from Hair Fibers
This study describes a new method for extracting red mordant dyes from wool fibers using ethylene diamine tetraacetic acid and N,N-dimethyl formamide, preserving the fibers for further examination.
research Chemical modification of keratin fibers using 2‐iminothiorane hydrochloride
This study found that chemically modifying hair with 2-iminothiorane hydrochloride improved the permanence of hair setting without damaging the hair by increasing disulfide bonds.