![]() Numerous ingredients have been evaluated by Ashland test methods, and the best candidates will be studied to understand their protection mechanism. ![]() The team of solvers at Ashland evaluated and researched the mechanism of how pollutants stick on hair and damage the hair and scalp. How did you choose your active ingredients? Our studies have identified key styling polymers that deliver pollution protection through leave-on formulas, conditioning polymers that deliver through rinse-on systems, and cosmetic actives that help improve scalp health. Their efficacy was also demonstrated in its final formulation. Using specific methods developed by Ashland, a number of technologies were evaluated for their protective properties. What product process do you follow from conceptualisation to delivery?Īshland and its team of solvers were able to solve this issue by focusing on three key areas: “repel – physical adhesion”, “shield – chemical damage”, and “rejuvenate – improving scalp health”. In the first part of our interview with the speciality ingredient and material leader, Ashland discussed the impact the urban environment has on the hair and scalp, and what is driving this sector. Another simple method based on sub-monolayer coverage spectra provides spectra suitable for classification analysis but is only semi-quantitative at determining absorption coefficients.Ashland introduced its trio of cutting-edge technologies and customer-centric solutions focusing on overcoming the detriment caused by environmental pollutants on skin and hair. A simple multilayer method for estimating particle absorption coefficients is demonstrated that compares well with values reported using ellipsometry for bulk polystyrene. ![]() These observations provide explanations for differences seen between optical properties of particles calculated using the specular-reflection method versus those calculated using traditional aerosol methods. Scattering effects in the spectra are consistent with surface scattering at the antinodes of the EFSW. The same effect is found to cause progressive weakening of the observed spectra as a function of increasing wavelength in sub-monolayer coverage measurements. Results show that absorption has a nonlinear, stairstep-like dependence on particle coverage and a wavelength dependence that can be explained by electric field standing waves (EFSW) caused by the mirrored substrate. Polystyrene spheres with measured diameters of 0.42 μm were studied using Fourier transform infrared (FT-IR) reflection microspectroscopy, and spectra are shown for coverages in the range 0.5–6 monolayers (ML). Gold-coated porous alumina filters were used as a substrate to layer the particles and provide consistent reflection spectra. We have been investigating the mid-infrared (MIR) reflection spectrum of microparticles on mirrored substrates. All subjects Allied Health Cardiology & Cardiovascular Medicine Dentistry Emergency Medicine & Critical Care Endocrinology & Metabolism Environmental Science General Medicine Geriatrics Infectious Diseases Medico-legal Neurology Nursing Nutrition Obstetrics & Gynecology Oncology Orthopaedics & Sports Medicine Otolaryngology Palliative Medicine & Chronic Care Pediatrics Pharmacology & Toxicology Psychiatry & Psychology Public Health Pulmonary & Respiratory Medicine Radiology Research Methods & Evaluation Rheumatology Surgery Tropical Medicine Veterinary Medicine Cell Biology Clinical Biochemistry Environmental Science Life Sciences Neuroscience Pharmacology & Toxicology Biomedical Engineering Engineering & Computing Environmental Engineering Materials Science Anthropology & Archaeology Communication & Media Studies Criminology & Criminal Justice Cultural Studies Economics & Development Education Environmental Studies Ethnic Studies Family Studies Gender Studies Geography Gerontology & Aging Group Studies History Information Science Interpersonal Violence Language & Linguistics Law Management & Organization Studies Marketing & Hospitality Music Peace Studies & Conflict Resolution Philosophy Politics & International Relations Psychoanalysis Psychology & Counseling Public Administration Regional Studies Religion Research Methods & Evaluation Science & Society Studies Social Work & Social Policy Sociology Special Education Urban Studies & Planning BROWSE JOURNALS
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