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Section: Testing

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Industry Insight: Testing the Most Efficient Color Shampoo/Conditioner Duos

In this "Industry Insight," Sabina Wizemann, senior chemist of the Health, Beauty and Environmental Sciences Lab at the Good Housekeeping Institute has evaluated shampoo and conditioner pairs to identify the best performers for hair dye retention. In a recent interview, she explained how she tests these products, analyzes their efficacy and claims, and which duos exemplified the highest efficacy, compared with other products.

Expanded Parameters for Particle Analysis

Fluid Imaging Technologies has launched a particle analysis instrument that permits 23 measurement parameters.

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Evaluating Shampoo Foam

There is probably no personal care category that is more competitive than shampoos. With this in mind, formulators of shampoos are asked by marketing to develop products to both appeal to consumers and perform (whatever “perform” means).

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A Dermatologic View—Bioengineering Analysis of Water Hydration

The water content of the stratum corneum (SC) influences almost every biophysical property measurable at the skin surface. Water hydration can be measured using the plastic occlusion stress test (POST) or the water sorption-desorption test (WSDT). These are detailed in the present article.

Beiersdorf Researcher Develops Skin Imaging Method for Analysis

Beiersdorf has created a new method of skin analysis to help it develop new skin care products.

Using Texture Analysis to Substantiate Hair Care Claims

Texture analysis provides quantitative information about a material’s response when deformed by a controlled force. When texture analysis is applied to hair treated with various conditioners and styling fixatives, the results can help substantiate claims made about the effectiveness of these hair care products.

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MilliporeSigma’s Chromolith Columns Enable Sunscreen Analysis

These columns are reportedly ideal for sunscreens and other lotions in order to provide efficient analysis.

Benchmarking Study to Examine Shampoo, Conditioner Rinse Profiles

TRI/Princeton is offering a benchmarking study on the rinsing of shampoos and conditioners to allow manufacturers a lower cost option for product testing, as compared with individual tests.

Interpretation of SPF In vivo Results: Analysis and Statistical Explanation

Methods for determining SPF in vivo are based on a biological response by human skin. To overcome intrinsic variation in these methods, large numbers of volunteers and statistics are required; however, these concepts are often poorly understood or worse, misinterpreted. This article discusses how these values should be interpreted and explains what they mean to formulators.

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Interpretation of SPF In vivo Results: Analysis and Statistical Explanation

Methods for determining SPF in vivo are based on a biological response by human skin. To overcome intrinsic variation in these methods, large numbers of volunteers and statistics are required; however, these concepts are often poorly understood or worse, misinterpreted. This article discusses how these values should be interpreted and explains what they mean to formulators.

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Using Texture Analysis to Benchmark Cosmetic Quality

The present article describes in detail how spreadability testing is performed using a texture analyzer. This ensures products meet their benchmarks, improving the chances of user acceptability.

Texture Analysis to Quantify Skin Care Product Efficacy

Using a texture analyzer to measure the tightness of the skin before and after the application of selected treatments, the authors demonstrate the potential of texture analysis instrumentation in testing the efficacy of skin care products and substantiating skin tightening claims.

Texture Analysis to Select Packaging and Formulate Hair Care Products

Texture analysis provides quantitative information about a material’s response when deformed by a controlled force. Examples illustrate the use of a texture analyzer to evaluate shampoo extrusion, hair spray film toughness, hair spray tackiness, styling wax hardness and aerosol canister deployment.

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[video] Dry Shampoo Efficacy: A Clinical Study

According to Julie Fichot, Ph.D., of Church & Dwight, not all dry shampoos are created equally. In this video interview, she presents efficacy and sensory findings from clinical and consumer studies of the Batiste product. Watch now!

In vivo Quantification of Corneocyte Lipids by Image Analysis

In a new method described here by the authors, fluorescence emitted from samples and captured by image analysis is used to quantify the number of lipids present in the cornified cell envelope. This in vivo approach is fast and noninvasive and could be used to screen molecules for potential moisturizing and restructuring effects.

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Rheology and Texture Analysis Used Together to Improve Raw Material Choices

SEPPIC has developed rheology and texture analysis protocols that, when used in combination, provide useful data regarding the impact of raw material choice on all the development steps: manufacturing procedure, formulation stability, skin feeling.

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L'Oréal and Alibaba Bring Mobile Acne Analysis to China

According to L’Oréal, this technology is the world’s first web app to analyze acne-prone skin and in China, 80% of young individuals are afflicted by acne. The new partnership gives Chinese consumers access to advice.

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Fast Analysis of Cosmetic Allergens Using Convergence Chromatography with Mass Spectrometry

Fragrances are complex combinations of substances that are added to many consumer products to give them a distinctive smell, impart a pleasant odor, or mask the inherent smell of some ingredients—but ultimately, to enhance the experience of the product user.

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