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180 Results

Section: Testing

TRI/Princeton Offers Hair Benchmarking Study to Share Testing Costs

This benchmarking study allows manufacturers to test hair products for conditioning, anti-breakage strengthening, and anti-static flyaway reduction with shared controls and labor to reduce costs by up to 57%. The company is accepting participants until Aug. 15, 2010.

Black women could be disproportionately affected, as 60% of participants who reported using hair straighteners self-identified as Black women.

Study Connects Hair Straightener Use to Incident Uterine Cancer

Hair straightening products could be linked to higher incidences of uterine cancer, a study of nearly 34,000 women in the U.S. recently found.

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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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Hidden Hair Damage and the Importance of Multiple Tests

It is of paramount importance for hair researchers to know the history of hair at the time of applying a treatment. The lack of such knowledge can create misleading results. Thus, a stress-strain test in both dry and wet states can provide a rapid means to check the reliability of the information collected, as is shown here.

Shiseido to Open Center for Hair Regeneration Research

The Shiseido Cell-Processing and Expansion Center (SPEC) is set to open on May 1, 2014, and will centralize the research and development of regenerative hair treatments.

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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.

Johann W. Wiechers, Ph.D.

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.

Texture Analysis to Select Packaging and Formulate Hair Care Products

Texture analysis provides quantitative information about a material’s response when deformed by a controlled force. Examples illustrate the use of a texture analyzer to evaluate shampoo extrusion, hair spray film toughness, hair spray tackiness, styling wax hardness and aerosol canister deployment.

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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Defending Integrity: Microemulsion to Restore Bleached and Dyed Hair Properties

Unlike skin, hair lacks regenerative properties, so it is important introduce components during bleaching and color treatments that preserve and maintain hair’s structure. The present article proposes a bis-PCA dimethicone solution, which acts via novel bonding mechanisms to impart cumulative strengthening in chemically treated hair.

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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.

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A Hint of Peppermint for the Hair and Scalp

Naolys's newest ingredient, derived from peppermint leaf, is designed to rebalance sebum and enhance the hair and scalp. The active can be used in any type of hair care formulation, including shampoos, masks, serums and long-term hair treatments.

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Kao Raises Shield Against Dust and Pollen in Hair

Kao Corp. presented new findings on the adhesion and negative effects of dust and pollen in hair. From this, researchers designed a shampoo and conditioning system to suppress this adhesion based on an oil-absorbing polymer.

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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Corn-derived Biosurfactant Shows Lower Temp = Higher Hair Adsorption

Want faster hair adsorption? Lower the temperature. As least, that's what one study with a corn-derived biosurfactant, from the Royal Society of Chemistry, showed.

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Zombie Hair and Insights from the Living-dead Connection

"How can we create a synergy between the living and dead part of hair to give consumers the best results? We manipulate the living to improve the dead,” said Thomas Dawson, Jr., Ph.D., during the TRI-Princeton 8th International Conference on Applied Hair Science.

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Correlating Porosity and Tensile Strength of Chemically Modified Hair

This study validates the porosity method against the widely accepted method of tensile strength for determining the hair damage imparted to hair due to cosmetic treatments.

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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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