Hair surface interactions against different chemical functional groups as a function of environment and hair condition. [PDF]
Abstract Objective The nature and magnitude of molecular interactions on hair surfaces underpin the design of formulated products, of which the application involves a competitive adsorption process between cationic surfactants, fatty alcohols and surface actives such as silicone.
Labarre L +7 more
europepmc +2 more sources
UV and visible light exposure to hair leads to widespread changes in the hair lipidome. [PDF]
Profiling the lipid classes and lipids in hair was used to understand the diversity of changes to the hair lipidome when exposed to UV and visible light. The amount of many lipid classes decreased with exposure to UV and visible light, including vitamin A esters, sterol esters, ceramides and mono‐, di‐ and triglycerides.
Ross AB +6 more
europepmc +2 more sources
Synthesis of a new amino acid derivative with long-lasting hair shape control effects and elucidation of its mechanisms. [PDF]
We have discovered 2‐(2‐aminoethylthio) succinic acid with a long‐lasting hair shape control effect. We have demonstrated its hair straightening and curl retention effect, and clarified its mechanism. Abstract Objective Hair is a crucial aspect of an individual's physical appearance.
Sato S +11 more
europepmc +2 more sources
Indirubin as a red hair Colourant from Indigofera tinctoria L. [PDF]
An immediate stable red colour result after application of Indigofera tinctoria L. on hair in the presence of isatin and a reducing agent was achieved. A revised indigo molecule and indirubin synthesis pathway for I. tinctoria L. application including the effect of said additives to the colour outcome is presented.
Klaas S, Vill V, Straske F.
europepmc +2 more sources
Reinventing henna: Enzyme‐catalysed colour release from stabilized Lawsonia inermis L. extracts
The instability and reduced dyeing performance of a cosmetic formulation containing 2‐hydroxy‐1,4‐naphthoquinone (lawsone), derived from Lawsonia inermis L., is demonstrated in comparison to a novel two‐component system. This system comprises one formulation with naturally occurring lawsone precursors and a second containing a specific hydrolase ...
Nele Dallmann +2 more
wiley +1 more source
Electrokinetic analysis reveals common conditioner ingredient interactions with human hair
Novel electrokinetic analysis reveals how cationic surfactant deposition on hair is influenced by chain length and counterion mobility. Longer‐chain surfactants show superior adsorption through enhanced van der Waals interactions, while chloride counterions enable stronger electrostatic interactions.
Huijun Phoebe Tham +4 more
wiley +1 more source
Scale‐robust fibre orientation analysis of hair using two‐dimensional Fourier transform
We present a simple and robust method to quantify hair fibre orientation using 2D‐DFT. It works with standard images and extracts directional features at multiple scales. This enables objective evaluation of cosmetic treatments and product effects. Abstract Objective To address the current lack of standardized tools for evaluating hair appearance in ...
Motoki Takeda, Sinyoung Lee, Ken Kiyono
wiley +1 more source
The shampoo and conditioner bar formulations enhanced hair gloss, promoting softness, improved cuticle alignment, and effective protection of hair shafts against external aggressors. Findings from mechanical properties measurements indicate that the clay‐containing formulations enhance the mechanical strength of hair, contributing to stronger and more ...
João Pedro Gonçalves de Souza Soares +2 more
wiley +1 more source
Text and Topos: British Travellers to Real‐and‐Imagined Classical Sites, c. 1560–1820
Abstract Early‐modern British travellers to the Mediterranean often understood their journeys through the lens of classical texts and culture. Historians sometimes explain this as an imaginative phenomenon: travellers’ preconceptions shaped by classical knowledge guided their subsequent comprehension and activity.
PAUL STOCK
wiley +1 more source
The Hair & Scalp CARE questionnaire is a validated tool for assessing the impact of hair and scalp condition on psychological wellbeing. The present data also suggest greater hair and scalp wellbeing is linked to lower levels of perceived stress and good sleep health.
Alice Newton‐Fenner +8 more
wiley +1 more source

