Recent in Formulating Aids (page 8 of 9)

Soap: Our Old Friend and Great Emulsifier

Cosmetic chemists are being constantly bombarded by raw material suppliers promising the latest and greatest new chemistry.

Industrial Biotechnology for Personal Care Innovation

BRAIN AG, a German biotech company, and Degussa AG successfully have collaborated on an R&D project in the area of white biotechnology.

Controlling the Spreading of Sunscreen Products

Spreading control agents used in the formulation of topically applied drugs, especially sunscreens, provide a method to control dosage and improve effectiveness. These materials have recently begun to solve the problem of insufficient product application in actual use.

Color Development Using Silicone Emulsifiers and Dispersants

Several types of PEG/PPG dimethicones and acrylate silicone copolymers were selected, and significant differences in their ability to disperse and stabilize pigments were studied. As the particle size got smaller, the color became deeper and stronger.

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.

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