Recent in Chemistry (page 6 of 10)

Amphiphilic Silicones to Extract Botanical Actives

Silicone-based compounds enable chemists to extract the desired fractions of materials from plants as well as impart cosmetic aesthetics. Here the authors discuss how to extract actives using amphiphilic silicones that have different partition coefficients, which are obtained by altering the ratio of oil-, water- and fluoro-soluble groups on the silicone molecule.

Small, Smaller and Nano Materials: An Invisible Benefit

Although nanomaterials have been used in cosmetics for some time, consumers believe they may constitute a health risk due to their possible penetration into the skin. The present article evaluates the benefits as well as the skin penetration of nanoparticles used in cosmetics.

Ingredient Profile—Sorbic Acid/Potassium Sorbate

SorbH and KSorb have become increasingly popular options for cosmetic preservatives due to their worldwide status as Generally Recognized As Safe (GRAS) food ingredients and their long and successful use history.

Comparatively Speaking: Arrow Symbols in Organic Chemistry*

Tony O’Lenick asks organic chemistry expert and founder of website Master Organic Chemistry James Ashenhurst, PhD, to explain the eight types of arrow symbols.

Specialty Pigments: Properties and Effects

Specialty pigments bring unique effects to personal care products, thus they are an important class of color additives for the decorative cosmetic industry. Presented here is a review of their properties and benefits, including mechanisms of refraction and reflection, as well as regulatory considerations.

Ingredient Profile—Mica

Mica is an inorganic material found in a wide variety of cosmetic and personal care products. Its use has been reported in more than 7,100 products, making it one of the most important mineral ingredients used in cosmetics.

Water Content and Moisturization

In the midst of his examination of the adsorption properties of hair, Trefor Evans addresses water content and its manipulation with regard to moisturization in the following excerpt from AlluredbooksPractical Modern Hair Science.

New Findings in Fullerenes

New findings regarding the formation of fullerenes, aka "buckyballs," were recently published in the journal Nature Communications, suggesting that smaller cages grow into larger ones.

New Anti-dandruff Target Identified

In a recent study, researchers found that an enzyme from the dandruff-causing pathogen Malassezia globosa provides a potential new anti-dandruff target.

Comparatively Speaking: Solubility vs. Extraction

In this installment of "Comparatively Speaking," industry expert Tony O'Lenick describes the difference between solubility and extraction, and how various extraction techniques can be used to isolate desired cosmetic actives.

Comparatively Speaking: Solubility vs. Partition Coefficient

Here, industry expert Tony O'Lenick explains the difference between solubility and partition coefficient, as the understanding can lead to a better delivery of a formulation's materials.

Nanotechnology in Cosmetics: A Review

As the commercial applications of nanotechnology have increased in the past decade, a number of nanoparticles are now being used in cosmetic products with optimized sensory attributes and consumer-perceivable benefits. This article reviews various forms of nanoparticles used in the cosmetic industry, discussing their properties, interactions with the skin and potential health effects.

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