Recent in Testing (page 20 of 32)

Evaluating the Physiochemical Properties of Emollient Esters for Cosmetic Use

This study assesses the physicochemical properties of four known cosmetic emollient esters in vitro to predict their sensorial benefits and correlate their properties with in vivo sensory attributes. This evaluation serves as a guide to selecting specific emollient esters for various cosmetic applications and to predicting their sensory attributes.

Fluorescence Laser Scanning Confocal Microscopy to Assess the Penetration of Low Molecular Protein Hydrolyzates Into Hair

The present study uses confocal laser scanning fluorescence microscopy to assess the penetration of protein hydrolyzates into hair. While higher amounts of protein were found in the cuticle, still significant quantities were observed in the cortical parts of hair, and this penetration was enhanced by longer incubation times.

Paper Posted to Aid Manufacturers with Harmonized Microbial Testing

Microtest Laboratories has posted a white paper on its website to help personal care product manufacturers understand microbial limits testing policies in accordance with the harmonization of the United States Pharmacopeia (USP), European Pharmacopeia (EP) and Japanese Pharmacopeia (JP) requirements.

ICCVAM Recommends Ocular Safety Tests for Cosmetics and Other Products

Four test method evaluation reports are now available from ICCVAM that provide recommendations for performing eye safety testing more humanely, and for developing and using non-animal test methods and strategies. Among these reports, ICVAAM has recommended that a cytosensor microphysiometer (CM) test method may be used to screen surfactant-containing formulations such as personal care products for the ability to cause permanent or severe eye injuries.

Antiaging in a Different Light: Assessing How Chromophores Color Perception

Aging influences cutaneous parameters that give rise to progressive changes in three skin chromophores, altering the visual homogeneity of skin. To address these changes, the authors developed and examined the effects of a complex based on Siegesbeckia orientalis and Rabdosia rubescens using a novel skin imaging technique.

Tools to Predict, Assess and Standardize Successful Color Cosmetics

Cosmetic companies have borrowed quality control methods from other industries that have product attributes such as color, gloss and texture down to a science. Specialized in such areas, X-Rite has developed tools to enable cosmetic companies to predict future color trends as well as set standards by which future cosmetics will be benchmarked.

Skin Toxicology—The Future May Be Orange

Here, industry expert Johann Wiechers, PhD, discusses the frequent use of percentages by toxicologists to calculate skin penetration. To relate this discussion to modern day events, Wiechers describes the skin penetration of orange paint, used by fans of the Dutch national football team.

TRI/Princeton Offers Hair Benchmarking Study to Share Testing Costs

This benchmarking study allows manufacturers to test hair products for conditioning, anti-breakage strengthening, and anti-static flyaway reduction with shared controls and labor to reduce costs by up to 57%. The company is accepting participants until Aug. 15, 2010.

CeeTox Expands In Vitro Capabilities with Acquisition

CeeTox has acquired assets of ADMETRx Inc. that allow it to expand its range of in vitro service offerings. Specifically, the acquired assets allow CeeTox to increase its existing Absorption, Distribution, Metabolism, Excretion (ADME) capabilities.

Researchers Advance Animal-alternate Test for Skin Sensitization

Researchers at the National Institute for Occupational Safety and Health and Portland State University have developed an animal-alternative test method to assess the potential for chemicals in consumer products to cause skin allergies.

Evaluating Essential Oils in Cosmetics: Antioxidant Capacity and Functionality

In the present work, the antioxidant capacities of three essential oils derived from basil and thyme were evaluated using a photochemiluminescence (PCL)-based assay. In addition, since the base formulation can affect the antioxidant activity of oils contained therein, ingredient interactions within final formulations were investigated.

Evaluating 1,3-Propanediol for Potential Skin Effects

In the present article, the authors assess the skin irritation and sensitization potential of 1,3-propanediol (INCI: Propanediol). Results in animals and humans by acute or repeat exposure support a low potential of skin reactivity for the material. In addition, the skin reactivity potential in humans was found to be lower with 1,3-propanediol than 1,2-propanediol (INCI: Propylene Glycol).

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Practical Modern Hair Science

Practical Modern Hair Science

Between The Covers Discover:

  • Amino acid distribution and biochemistry
  • Examination of strength and anti-breakage product claims
  • Hair: growth cycle, heat protection, shine, and color intensity and retention
  • Overview of shampoos and issues relating to surfactants
  • Science of hair color including chemical reactions and formulations
  • Ethnic differences in hair and absorption of materials
  • Evaluate and quantify visual properties of hair
  • Dandruff-Causes and biology of the condition
  • Hair styling products and polymers

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Apply Topically: A Guide to Formulating

Apply Topically: A Guide to Formulating

Finally! This book offers practical approach to the formulation chemist’s day-to-day endeavors by: addressing the innumerable challenges facing the chemist both in design and at bench, such as formulating with/for specific properties; offering valuable “tips” to troubleshooting issues regarding ingredient selection and interaction, regulatory concerns that must be addressed early in development, and the extrapolation of preservative systems; exploring the advantages and limitations of raw materials; addressing scale-up and pilot production process and concerns; and much more.Order your copy today.