Recent in Formulating Aids (page 8 of 9)

Resins: The Other Kind Of Silicones

Silicone resins trimethylsiloxysilicate and Polymethylsilsesquioxane provide transfer resistance to cosmetic formulations. Phenylcontaining silicone resins additionally provide a high refractive index and gloss. A gelbased silicone resincontaining powder adds improved skin feel and oil absorption.

Surfactant-Free Formulating

The author describes how familiar hydrophobic materials can be formed into stable aqueous dispersions via an extraordinary high pressure, high shear process utilizing blends of alkylated phophatidyl choline.

Honeywell Launches Enhancement Ingredients

Honeywell announced the launch of its line of ingredients designed to improve the features and performance of cosmetics and personal care products.

Silicone Compounds–New Formulation Possibilities

Tapping into little understood products selected from a class of well known compounds can provide formulation advantages. PEG/PPG dimethicone compounds, alkyl dimethicone compounds and alkyl PEG/PPG dimethicone compounds are three classes of compounds that offer far more utility in personal care products than is generally appreciated by formulators.

Using Nonaqueous Emulsions to Avoid Discoloration Reactions

This article focuses on the physical principles of nonaqueous emulsions and their practical applications in preventing discoloration from ascorbic acid, hydroquinone and dihydroxyacetone.

Stabilizing Nanodispersions in Personal Care and Cosmetic Applications

Nanodispersions can be stabilized by various techniques to prevent flocculation, Ostwald ripening and coalescence in solubilized systems, liposomes, microemulsions, nanoemulsions and nanosuspensions. Examples are described.

Hydrolysis-Resistant Esters

Hydrolytic instability of esters in cosmetic products can be reduced, compared to that of standard straight chain esters, by using non-hydrolyzable esters synthesized from a diol reaction sequence. Two commercial dimer diol di-esters, given as examples, enable stable formulations at extremes of pH.

Sugar: An Underestimated Natural Material

Sugar can be useful to formulate preservative-free products and to maintain the stability of formulations during freeze-thaw cycles. Formulators are beginning to recognize sugar as an active ingredient whose derivatives offer new uses in the personal care industry.

Antichaotropic Salts for Stabilizing Cysteine

Antichaotropic salts stabilize cysteine by lowering the water activity in an aqueous solution. This technique can be used to extend the shelf life of cysteine permanent wave solutions.

Using Perfluoropolyether Phosphate to Lower pH without Increasing Skin Irritation

Clinical studies described here show that perfluoropolyether phosphate behaves as a very mild acidic agent, being effective in decreasing the pH without increasing the collateral effects of acidic compositions.

How Do I Thicken my Cosmetic Formula

This article explains how to select a thickener from nine basic thickener groups that enable the chemist to change a product's viscosity and rheological properties, such as stability, feel and flow.

PFPE Phosphate: A Multifunctional Material

Chemically modifying a Z-type perfluropolyether by introducing phosphate groups yields a multifunctional material useful for preparing aqueous solutions, hydrogels and emissions. Formulation guidelines and cosmetic properties of the material are discussed