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Section: Testing > Efficacy
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.
Nutricosmetics
Korean Team Puts Their 'Finger' on the Next Nutricosmetic
The oral intake of Chinese ginger, otherwise known as fingerroot or
Boesenbergia pandurata
, was recently found to improve skin hydration, wrinkling and gloss. How? Read on to learn more.
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.
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.
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.
Hair Care
[podcast] The Smell of Success: P&G's Wilkerson on Consumer-acceptable Scalp Care
What's that smell? Not the infamous selenium. In this exclusive podcast, Rolanda Wilkerson, Ph.D., principal scientist at P&G, shares how the Head & Shoulders brand was re-formulated for consumer-acceptance, among other insights. Listen now!
Efficacy
Lost in Extraction: DNA Reveals the Impact of Filtering on Sand Daffodil Extract Traceability
The authentication and traceability of natural raw materials have been a recent focus in several industries. Here, four specific markers in materials derived from
Pancratium maritimum
, also known as sand daffodil or sea lily, are examined using DNA barcoding and metabarcoding. Results reveal the plant DNA, and therefore traceability, is largely degraded before entering cosmetic compositions.
Formulas/Products
Excessive Sweat, Gone in One Swipe
There's a new topical solution for excessive sweat that could swipe away future embarrassment—and it's just been approved by the U.S. Food and Drug Administration.
People
Ones to Watch: Beth Gyurke
Our "Ones to Watch" series features up-and-comers in and around cosmetics R&D who have limited experience but unlimited potential. In this edition, meet Elizabeth (Beth) Gyurke, who is an associate research scientist in Amway's imaging and measurement lab.
People
Ones to Watch: Shilpi Jain
Our "Ones to Watch" series features up-and-comers in and around our industry who have limited experience but unlimited potential. Here, meet Shilpi Jain, whose focus at Skinveda LLC is on topical skin whitening and pain relief, among other areas.
Cleansing
When Water is Hard on Eczema
Hard water contains minerals that are tough on the skin, especially those predisposed toward atopic dermatitis. Recent research in the
Journal of Investigative Dermatology
looked into how hard water affects the skin barrier.
Efficacy
[podcast] Naturals and Synthetics: On Even Ground?
Burt’s Bees may be best known for its lip balm but things are about to change; at least, if Celeste Lutrario, vice president of research and development for the company, has it her way.
Efficacy
Words from Wiechers on 'Snake Oil Sellers'
Now more than ever, "snake oil sellers" have access to consumers, which may be, in part, why the industry is consistently under attack. In this first installment of our new "Words from Wiechers" series, column editor Tony O'Lenick shares lessons for the betterment of both formulas and the industry's overall credibility.
Literature/Data
Lauder Findings on Sirtuins, Stress and Eucalyptus
New findings highlight the importance of sirtuins in skin cell activity, how they relate to environmental signals and circadian rhythm, plus the antioxidant efficacy of eucalyptus.
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