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Type: Article

Section: Testing > Sensory

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How Damaged is Hair? Part I: Surface Damage

This article is the first of two that explores ways of capturing and quantifying the different forms of hair damage. Here, we begin with damage to the hair surface, or cuticle, while also exploring the implications of this occurrence. A second article will focus on damage to the internal cortex structure.

For desirable hair styles, both stiffness and flexibility are necessary – but the two properties are generally considered incompatible.

Isomalto-oligosaccharides Naturally Balance ‘Stiffness’ with Flexibility for Hair Styling Benefits

This article describes enzymatically controlled naturally derived isomalto-oligosaccharides. It demonstrates how they balance stiffness and flexibility to maintain hair styles, as well as reduce the need for synthetic setting polymers.

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What Food Science Can Lend to Skin Care

What insights can personal care leverage from the foods industry? This article explores food trends, sensory language and metrics that translate across these categories.

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The Perplexing Topic of Hair 'Type': How Do We Classify Hair?

Most hair-related properties and issues can be rationalized by fiber size and shape, and/or the consequences of extreme conditions. However, the varying reactivity of different hair types with chemical treatments suggests potential differences in structure.

Evaluating Hair Conditioning with Instrumental Combing

When formulating a hair care product, there is often a need for testing that validates the product’s technical performance. This testing provides guidance to create formulas with appropriate performance, while also communicating the product’s message to the consumer. This article discusses the use of instrumental combing measurements when formulating hair conditioning products.

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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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Testing Trending Hair Care and Skinification Claims

Various test methods, some borrowed from skin care, can be used to validate hair product claims. This article reviews several, including conditioning, anti-breakage, hydration, skinification-related, damage repair, anti-dandruff, anti-hair loss and more.

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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?

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Binding Force: Natural Oxidized Keratin Internalizes Hair Repair

Bond multipliers have been developed to protect and repair hair. One in particular is a novel natural keratin alternative. Here, it is shown to retain fiber flexibility and protect and repair hair by binding intermediate filament proteins within the fiber.

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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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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.

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Silicone Stand-in: Lauryl/Myristyl Polyricinoleate Naturally Improves Perceived Hair Hydration

This article is focused on a nonionic, nature-friendly hair care ingredient: lauryl/myristyl polyricinoleate. Designed to impart a sense of hydration to hair, the material is shown to ease combing and provide a smooth after-feel in a manner surpassing benchmarks.

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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.

Fluorescence Lscm To Assess The Penetration Of Low Molecular Protein Hydrolyzates Into Hair

Fluorescence LSCM to Assess the Penetration of Low Molecular Protein Hydrolyzates Into Hair

The present study uses confocal laser scanning fluorescence microscopy to assess the penetration of protein hydrolyzates into hair. While higher amounts of protein were found in the cuticle, still significant quantities were observed in the cortical parts of hair, and this penetration was enhanced by longer incubation times.

Fluorescence Laser Scanning Confocal Microscopy to Assess the Penetration of Low Molecular Protein Hydrolyzates Into Hair

The present study uses confocal laser scanning fluorescence microscopy to assess the penetration of protein hydrolyzates into hair. While higher amounts of protein were found in the cuticle, still significant quantities were observed in the cortical parts of hair, and this penetration was enhanced by longer incubation times.

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