Recent in Method Development/Validation (page 1 of 3)

How Damaged is Hair? Part II, Internal Damage

This article is part II in our series on hair damage. It explains the internal cortex structure of hair is not easily visible, and that various mechanical tests can yield different conclusions. Here, tests are described that can show changes to the internal cortex structure and their impact on hair’s mechanical properties.

Untouched, 'Primitive' Microbiome Sets the Skin Health Benchmark

As it turns out, on skin, the more "bugs," the better; and cosmetics could be negatively affecting their diversity. New research from the UK compared microbiomes to set a "healthy skin standard," against which the effects of products can be measured, in the future.

Depth Perception: FTIR Reveals Devices Deliver Actives and Hydration Deeper

The deposition, delivery and penetration of actives are key to the success of skin care products and consequential to their efficacy. This paper explores ATR-FTIR imaging to compare the penetration of actives into skin via two application methods and their impact on skin hydration.

Soft-focus for the Selfie-obsessed: Eye Tracking to Improve Color Formula Development

In cosmetics, soft focus refers to the blurring of light to immediately correct the appearance of wrinkles and skin imperfections. This parameter can be affected by the refractive index of the emollients used, as well as formula volatility and the dispersion of fillers. The use of eye tracking, described here, can help the formulator quickly select the best-performing formulas.

Raman Imaging Produces Melanoma 'Snapshot'

Pheomelanin is the red/blond pigment. Its presence has been associated with an elevated risk of melanoma. However, a new technique has been developed to visualize it, which could serve as an early indicator.

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.

VIDEO: 3D Printing Takes Efficacy Tests to New Depths

3D-printed skin samples demonstrate the full potential of a product's efficacy, as AMA Labs explained during in-cosmetics North America.

Package Design Research: Your Expression Says it All

A thesis study is under way at Clemson University to develop dynamic test methods that evaluate consumer facial expressions in reaction to packaging designs in a new way: in situ.

Tell Me How You Really Feel

Focus groups provide colorful qualitative data that can set up brands for success.

Laboratoires Expanscience Launches Slimming Ingredient

Laboratoires Expanscience introduced Macaline, its first cosmetic active ingredient with slimming properties including draining and firming.

Ashland’s Ingredients Portfolio Advances Worldwide

Ashland integrated its research and development facilities across the world to measure the performance of its ingredients portfolio based on consumer populations in major markets.

Yield Stress Measurements for Personal Care, Part I: Definitions and Basics

The aim of this article series is to properly define and differentiate yield stress from high viscosity, as well as develop a method for assessing whether a sample has a yield stress. In addition, it will illustrate how to determine the amount of yield needed for a given application.

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