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191 Results
Type: Article
Section: Testing
Method/Process
Determining Korean Consumers’ Degree of Exposure to Lipstick and Face Creams
This study describes methods used in a Korean study to calculate consumer exposure to lipstick and face creams. The average amount applied daily was estimated and compared with data collected by weighing containers before and after use. The data collected was 1.8 to 1.6 times greater than the estimate, so although the survey represented real use patterns, the actual data was more accurate.
Method/Process
Determining Korean Consumers’ Degree of Exposure to Lipstick and Face Creams
This study describes methods used in a Korean study to calculate consumer exposure to lipstick and face creams. The average amount applied daily was estimated and compared with data collected by weighing containers before and after use. The data collected was 1.8 to 1.6 times greater than the estimate, so although the survey represented real use patterns, the actual data was more accurate.
Method/Process
Determining Korean Consumers’ Degree of Exposure to Lipstick and Face Creams
This study describes methods used in a Korean study to calculate consumer exposure to lipstick and face creams. The average amount applied daily was estimated and compared with data collected by weighing containers before and after use. The data collected was 1.8 to 1.6 times greater than the estimate, so although the survey represented real use patterns, the actual data was more accurate.
Efficacy
Lasting Impression: A Consumer-centric Approach to Measure Transfer-proof Lipstick
Described here is the development of a test method combining consumer input with instrumental measurements to assess the transfer-proof performance of lipsticks. Three lipsticks with varying transfer-resistance efficacy are then put to the test using this method.
Color Cosmetics
Lip-smacking Results: Mixture Design ‘Pays Off’ to Optimize Wax/Oil Lipstick Ratio
This article explores Mixture Design for lipstick development. The approach models the blending surface with a suitable mathematical equation to identify ideal ingredient ratios. As is shown here, Mixture Design can effectively optimize lipstick formulations, saving development time and costs.
Sun Protection
The Best Sunscreen? The One People Will Use.
This guest advisor commentary comes from regular
Cosmetics & Toiletries
contributor and photochemistry expert Craig Bonda, president of Inception Partners, LLC, and technical consultant to the sunscreen industry.
Method/Process
The Effect of Skin Metabolism on the Absorption of Chemicals
Skin expresses enzymes that can metabolize endogenous molecules but little is known regarding how they impact the delivery of xenobiotics. This review of recent works shows that skin metabolism alters the dermal absorption of lipophilic compounds, which opens new areas of investigation regarding the safety and efficacy of topically applied cosmetics.
Method/Process
The Effect of Skin Metabolism on the Absorption of Chemicals
Skin expresses enzymes that can metabolize endogenous molecules but little is known regarding how they impact the delivery of xenobiotics. This review of recent works shows that skin metabolism alters the dermal absorption of lipophilic compounds, which opens new areas of investigation regarding the safety and efficacy of topically applied cosmetics.
Literature/Data
Preserving the Facts on Parabens: An Overview of These Important Tools of the Trade
Parabens have a long history as effective preservatives in foods, cosmetics and drugs, with extensively documented human and environmental safety profiles. This article reviews these important ingredients.
Efficacy
Words from Wiechers: In the Land of the Blind, the One-eyed Man is King
"Regulatory bodies claim that everything should be tested against a placebo, but they should also learn to see there is a difference between fundamental science and applied science," the late Johann Wiechers, Ph.D., writes, in this month's column. He also explains blinded studies.
Tech/Equipment/Services
Assessing the Effects of Blue Light on the Skin in New Validated Method
Studies have shown blue light can have damaging effects on the skin. Genemarkers has developed a reproducible in vitro method for measuring blue light effects. Learn how Genemarkers’ blue light testing can aid product development.
Efficacy
Beating the Damaging Effects of Heat on Hair
Heat treatments are among the more popular methods for achieving straight hair, yet their high temperatures are quite damaging to the hair’s structures. Learn about the damaging effects and suggested solutions for repairing heat-damaged hair.
Actives
Don’t Count On Genetics, Sunscreens are the Best Bet
In a podcast with P&G scientists Frauke Neuser, Ph.D. and Rosemarie Osborne, Ph.D.,
Cosmetics & Toiletries
learned about genetic studies in support of the Olay brand, and more. Following is an excerpt.
Efficacy
Your Hair on Acid: The Influence of Carboxylic Acids
Carboxylic acids are growing in use to alter hair's properties from the inside out. This column explores the efficacy of these materials and presents possible explanations for their effectiveness.
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.
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.
Method/Process
Assessing the Impact of Hair Damage Types on Color Retention
This article reviews and assesses damage types caused to hair before and after artificial coloration, i.e., by bleaching, perming, heat treatment, UV exposure and shampooing, to compare how they impact color durability individually and combined. Formulation emerges as the key to designing shampoos that efficiently deliver actives to improve color protection against these and other damage types.
Method/Process
Assessing the Impact of Hair Damage Types on Color Retention
This article reviews and assesses damage types caused to hair before and after artificial coloration, i.e., by bleaching, perming, heat treatment, UV exposure and shampooing, to compare how they impact color durability individually and combined. Formulation emerges as the key to designing shampoos that efficiently deliver actives to improve color protection against these and other damage types.
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