Search Cosmetics & Toiletries: Page 3

74 Results

Section: Testing > Method/Process

Hair Ethnicity and Ellipticity: A Preliminary Study

Ethnic hair care addresses diverse fiber compositions that require unique products. This comprehensive review in hair fiber dimensions among straight, wavy and curly/coily hair serves as a basis from which product developers can design products to cater to unique hair type needs. The current study examines the ellipticity of Caucasian, Brazilian, Hispanic and African-American hair.

BrushingHair850

Oxygen Breathes Life Into Hair Regeneration Research

Oxygen-permeable silicone was the key to recent research in Biomaterials, developed in hopes to bring about new hair regeneration treatments.

Flexabrasion: A Method for Evaluating Hair Strength

Both bending and abrasion should be tested—along with extension—when evaluating hair strength, as the authors show in tests of a new active for increasing the strength of bleached hair.

CT1311+Huang+EQ+1

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.

Using Texture Analysis to Substantiate Hair Care Claims

Texture analysis provides quantitative information about a material’s response when deformed by a controlled force. When texture analysis is applied to hair treated with various conditioners and styling fixatives, the results can help substantiate claims made about the effectiveness of these hair care products.

Measuring Hair Strength, Part I: Stress-Strain Curves

This article is the first in a series that will address the approaches of measuring the “strength” of hair and quantifying the manner by which this property may be altered. Specifically, it will begin with the generation of stress-strain curves through the use of constant rate extension experiments.

Article Download: Evaluating Hair Conditioning With Instrumental Combing

Download the complete article here.

The substrate could aid in hair loss treatment and may have broader applications for skin.

3D Bioprinted Hydrogel Enables Hair Follicle Regeneration

A recent paper published in Acta Biomaterialia describes a 3D bioprinted scaffold that enables dermal papilla cells to regenerate entire follicles. The substrate could aid in hair loss treatment and may have broader applications for skin.

FlippingAfricanHair850

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.

Cyclic Testing: Demonstrating Conditioner Benefits on Damaged Hair

Cyclic fatigue testing simulated stresses experienced by hair fibers from repeated grooming and styling. Researchers used the Weibull parameter of characteristic life to assess damage. Survival probability graphs showed conditioner use helped damaged hair.

Sabinsa has published a study showing successful results for its health serum in adults experiencing hair thinning and loss.

Sabinsa Serum Clinically Proven to Prevent Hair Loss

Sabinsa has published a study in Clinical, Cosmetic and Investigational Dermatology showing successful results for its health serum in adults experiencing hair thinning and loss.

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.

AfricanHairHeatDamage850x425

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.

A Hair Dyeing Solution for the Dye-allergic Consumer

This article describes how to identify allergic contact dermatitis resulting from hair dye, and outlines prevention principles for those who wish to continue dyeing their hair despite being allergic—with clear implications for those formulating these products. The main sensitizers in hair dye are discussed, along with techniques to minimize exposure to these allergenic substances.

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.

Light-on-hair-fading-CT1609_Evans_850x850

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.

WomanLookingatHerDamagedHair850x425

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.

RedheadHoldingCorn850

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.

Page 3 of 5