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Section: Testing > Sensory

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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.

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Sex Lubricant Market on the Rise

Abstaining from many (not all) of the dirty puns we could slide into this report, here we describe what's behind the growing and virile personal lubricants market.

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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.

Shaving And Its Effects On Percutaneous Absorption In The Skin

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.

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[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!

A Dermatological View: Tandem Irritants With Synergistic, Additive or Quenching Effects on the Skin

In this article the results of six published tandem irritation studies are evaluated; possible mechanisms and clinical ramifications, albeit complex, are discussed. The clinical relevance of tandem irritation among cosmetics users and in many occupational settings appears obvious and suggests the need for further studies clarifying its principles and mechanisms.

A Dermatological View: Tandem Irritants With Synergistic, Additive or Quenching Effects on the Skin

In this article the results of six published tandem irritation studies are evaluated; possible mechanisms and clinical ramifications, albeit complex, are discussed. The clinical relevance of tandem irritation among cosmetics users and in many occupational settings appears obvious and suggests the need for further studies clarifying its principles and mechanisms.

[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.

UV Transmission Assessment: Influence of Temperature on Substrate Surface

This work evaluates the impact of temperature on test substrate surfaces during the application, spreading and drying steps of the in vitro method to measure ultraviolet (UV) transmission. The authors work in a range between 20°C and 35°C, and demonstrate that controlling temperature is a key test parameter that should be strictly controlled to ensure reliability.

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New Ideas on Hair Breakage: Mending Existing Flaws

Our historical beliefs as to the causes of hair breakage have been largely shaped by findings from testing approaches. More recently, an alternate mechanical testing technique, fatigue testing, has been changing our perspective on this topic.

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Author Commentary: John Jiménez and Mauricio Guzman Alonzo on Synesthesia in Cosmetics

Most everyone knows what it's like to be a consumer. More recently, product developers have been tapping into this experience to evoke emotional connections in consumers. John Jiménez and Mauricio Guzman Alonzo, authors in our latest issue, have been leading this charge for cosmetics development. Here, they share their insights.

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Conditioned Response: Fragrance's Cross-modal Effect on Sensory Perception in Hair Care*

This study compared the impact of two fragrance types on the tactile perception of dry, bleached hair treated with a base or enhanced leave-on conditioner. Sensory tests showed a fruity fragrance was most successful at imparting the perception of conditioned hair.

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Body Talk: Defining Volume, A Technical Dissertation on Hair Body and Volume

Consumer definitions of hair volume and body differ from their scientific counterparts, while both remain vague. This column discusses challenges concerning the study of hair volume and body, including the influences of hair coloring and styling.

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Touchscreen Skin: The Next Wearable?

Are we closer to an e-Skin reality? The market may be ready. But is the technology?

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Symrise’s Thermolat Reveals Warming Test Results

“Thanks to its safe and gentle effect, Thermolat can be used in a very wide range of care and beauty products and gives them the ability to create a cozy warm feeling.”

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Packaging: The ‘Silent Salesman’ of Cosmetics

Product packaging is nearly as important, if not more so, than the ingredients in it. This article examines a brief history, classes and properties of various types of packaging, and provides examples of the latest pack advances.

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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.

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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.

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