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180 Results

Section: Testing > Efficacy

Johann W. Wiechers, Ph.D.

Words from Wiechers: Off the Scales?

In this installment of our Words from Wiechers series, the late author reviews three types of lies in the cosmetics industry: "lies, damn lies and statistics," keeping our statistical honor in check.

Defining and Controlling Frizz

There is likely a variety of causes and contributors to the nebulous consumer term “frizz.” This article attempts to craft a universal definition and then progresses to further examine impacting factors. These discussions focus on methods for quantifying hair properties and assessing the positive impact of commercial hair care products.

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Tattoo-removal Patch Offers ‘Tat’-ilizing Results

A clear, silicone patch is changing the tattoo removal game—Research in Lasers in Surgery and Medicine found that removal treatments using the patch could be almost three times as fast at traditional methods.

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Time to Shine: The Evolution of Nutricosmetics

While the numbers for nutricosmetics have seen modest growth, they continue to concentrate in specific regions. Considering a number of factors, described here, the time may finally be right for nutricosmetics to shine worldwide.

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Kao Takes the Heat Off Infrared-exposed Skin

By focusing on principle factors related to light wave interference, Kao researchers have identified a means to selectively block the NIR wavelength.

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Secrets of the Trees for Super Cosmetics?

Trees are not the mute, woody giants we think them to be. They are actually quite chatty. What do talking trees have to do with cosmetics? I started to draw parallels between them our industry’s work on the microbiome, epigenetics and wellness cosmetics; even sustainability.

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Editor's Note: The Fiber of Our Being

It’s in the very fiber of our being to bring you data and ideas that are critical and relevant to your product development efforts, beyond space constraints.

Can your mirror track your skin's condition? HiMirror says yes.

'Mirror, Mirror, in the Internet of Things. . .

...use great caution with the advice you bring.' Just what we need. Another critic scrutinizing appearance. And before coffee no less. Yet, this unbiased, digitized evaluation offers interesting potential; and if we don't like it, we can always turn it off.

Analyzing Deposition from Rinse-off Hair Products

The most common approach to determine ingredient deposition on hair is to analyze the treated tresses, but this poses several challenges. Instead, the authors describe a novel approach based on determining the amount of ingredient collected in the rinse water, and back-calculating the amount deposited on hair. Development and validation efforts discussed here use polydimethylsiloxane as a model compound.

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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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Big Data with a Grain of Salt

Now that we’re tallying up results from intricate tests of genetic up- and down-regulation, alterations in our body’s microbiome and neuron response patterns for product likes/dislikes, we have to be careful.

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Analyzing Deposition from Rinse-off Hair Products

The most common approach to determine ingredient deposition on hair is to analyze the treated tresses, but this poses several challenges. Instead, the authors describe a novel approach based on determining the amount of ingredient collected in the rinse water, and back-calculating the amount deposited on hair. Development and validation efforts discussed here use polydimethylsiloxane as a model compound.

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InVitro Received Final Approval of Ocular Irritection

During an annual meeting, InVitro International received OECD Expert Group on Skin and Eye Irritation Test Methods acceptance of Ocular Irritection. The company is now planning for how it can benefit other laboratories and what its next move will be.

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The Depths of Hair Dyes: Understanding Users, Formulating Answers

The present article touches on misconceptions about ammonia- versus monoethanolamine-based hair dyes. It also analyzes the facts about these ingredients to arm formulators with both the consumer perspective and scientific rationale for ingredient choices.

Quantifying the Performance of Hair Styling Products—Part 1

There are two general classifications of hair styling products—those that help with style creation and those that prolong the style. Both facilitating style creation and promoting hold longevity stem from the presence of water-soluble polymers in formulations. This paper discusses methods to evaluate these properties and quantify performance.

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Researchers Uncover Role of Exosome in Hair Growth

Scientists from SILAB and the French National Institute of Health and Medical Research have uncovered a communication pathway between dermal fibroblasts and the dermal papilla that could stimulate the regrowth of hair.

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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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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.

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