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75 Results
Type: Article
Section: Testing > Sensory
Tech/Equipment/Services
Tools of the Trade for Sensory Testing
One challenge in manufacturing is the variance in quality of raw materials; another is the mixing process. Mechanical tests, described here in brief, will quickly identify cosmetics and lotions that should be rejected or reworked.
Method/Process
Tell Me How You Really Feel
Focus groups provide colorful qualitative data that can set up brands for success.
Efficacy
A Sunny Proposition: The Effects of Sun on Hair
While not nearly as well-documented as skin, plenty of literature indicates the sun can have damaging effects on hair.
Sensory
'Zapping' Sensitive Skin: Capsaicin Tests Show
Embelia concinna
Comforts Irritation
In previous work, a flavonoid-titrated active ingredient based on
Embelia concinna
was shown in vitro to calm and soothe sensory neurons stimulated with capsaicin. Here, those results are confirmed in vivo using a capsaicin stinging test with human volunteers.
Efficacy
Modifying Hair’s Structure From the Inside
Changing hair properties is a regular function of daily-use treatments. But what other methods can be used? Altering the hair’s internal structure may be the next way to achieve these changes.
Efficacy
Coiffed Conundrum: Equating the Measurement of Hair Shine
Shine constitutes the ability for light to reflect off of surfaces. For consumers, perceived shine is indicative of healthy hair. For marketers, it is the gateway to hair product benefits claims. But how can shine be measured to support those claims?
Sensory
Ranking Body Creams by Sensory Properties
Ranking descriptive analysis (RDA) is a sensory test from the foods industry. Here, it is applied to evaluate the properties of four body creams, and the results are compared with those of the well-known quantitative descriptive analysis (QDA) profiling. Findings suggest this technique could positively impact sensory testing for product development.
Hair Care
Balancing Sensory Effects with Improved Scalp Moisture
An oil-based moisturizing ingredient was developed to increase scalp hydration and improve TEWL, while also imparting desired sensory effects to hair. Instrumental and panel tests were performed, described here, which confirmed the ingredient delivered scalp hydration as well as wet hair detangling and softness to hair.
Sensory
Yield Stress Measurements for Personal Care Part II: Methods
The previous article defined yield stress and explained how to calculate the amount needed for a given application. Here, methods for measuring yield stress are compared by determining the values of two materials: a non-thixotropic acrylates copolymer solution, and a thixotropic body wash. The results provide recommendations for methods in terms of relevance, exactness and robustness.
Method/Process
Applied Neuroscience to Understand Cosmetic Consumers: Consumer Study (part II)
By measuring the non-conscious consumer response to products, concepts and before/after results, it is possible to make decisions for product development and marketing, as well as develop product claims. These possibilities are discussed in this three-part series, as are two case studies.
Method/Process
Applied Neuroscience to Understand Cosmetic Consumers: Product Development (part III)
By measuring the non-conscious consumer response to products, concepts and before/after results, it is possible to make decisions for product development and marketing, as well as develop product claims. These possibilities are discussed in this three-part series, as are two case studies.
Method/Process
Applied Neuroscience to Understand Cosmetic Consumers: Definitions (part I)
By measuring the non-conscious consumer response to products, concepts and before/after results, it is possible to make decisions for product development and marketing, as well as develop product claims. These possibilities are discussed in this three-part series, as are two case studies.
Literature/Data
Shaving and its Effects on Percutaneous Absorption in the Skin*
Despite its being an area of concern for many years, the percutaneous absorption of cosmetics has not been rigorously studied. Additionally, the effects of shaving on this process are relatively unknown. An overview of recent research reveals that more research in this area is required.
Methods/Tools
IFSCC 2014 Explores Social, Psychological and Sensorial Aspects of Beauty
As one might expect from an event centered around beauty and staged in Paris, the 28th Congress of the International Societies of Cosmetic Chemists (IFSCC) was nothing less than fabulous. However, the glamour and fanfare was deeply rooted in science.
Sensory
Testing and Developing a Sugar-derived Surfactant Blend for Delicate Skin
Vegetable-derived, mild and sustainable skin cleansing ingredients are in demand, and this has led to the development of new detergent structures. Described here is a combination of two mild surfactants that fulfils these requirements using the concept of “interrupted soap” to impart mildness. Studies to verify the functional, sensorial and mild characteristics of the new blend are detailed.
Tech Transfer
MIT Researchers Develop 'Feature Tuning' Algorithm
Researchers at MIT have developed an algorithm for the “feature tuning” of digital images, specifically faces, for improved memorability and other qualities. While the technology is implicated for effects in social media, it also suggests new considerations for digital imaging in cosmetic product development.
Literature/Data
Columbia Researchers Uncover Touch Sensory Mechanisms
A study published in
Nature
highlights how a team of Columbia University Medical Center researchers have uncovered the mechanisms behind touch; i.e., how humans feel details and textures.
Sensory
Measuring and Pre-selecting Functional Filler Pigments
Functional filler pigments play an important role in adjusting optical properties such as transparency and soft focus effects in cosmetics. However, their suitability for specific formulas is not apparent until time-consuming tests using many different fillers have been conducted. A new method to predetermine the soft focus effects of functional filler pigments is described here.
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