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- Conditioner/Moisturizer (238)
- Delivery (150)
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- Repair (95)
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- Surfactant/Emulsifier (132)
- UV Filter (104)
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Formulating Aids
New in Formulating Aids (page 12 of 13)
Jan 02, 2006 | 12:45 PM CST
Using Nonaqueous Emulsions to Avoid Discoloration Reactions
By: James Ziming Sun, PhD, and James W. Parr, Schw…
This article focuses on the physical principles of nonaqueous emulsions and their practical applications in preventing discoloration from ascorbic acid, hydroquinone and dihydroxyacetone.
Jan 02, 2006 | 12:41 PM CST
Oleosomes: Natural, Self-emulsifying Systems
By: J. Guth, PhD, and C. Cappabianca, Lonza Inc.
Safflower oleosomes isolated in the form of a naturally occurring emulsion can be useful to the cosmetics marketplace to deliver the emolliency, occlusivity and antioxidant effects without the need for other emulsifiers. In addition, safflower oleosomes can be used as the nonactive portion of the oil phase of a typical cosmetic formulation.
Jan 02, 2006 | 12:38 PM CST
Polymers for Thickening and Aesthetics of Surfactant Systems
By: Anja Gestmann, PhD, and Judith Bucher, Nationa…
In the presented study, researchers suggest that acrylates/aminoacrylates/C10-30 alkyl PEG-20 itaconate copolymer serves to stabilize hydroxypropyl starch phosphate polymer in surfactant systems, and also enables hydroxypropyl starch phosphate polymer to further build viscosity.
Dec 23, 2005 | 03:57 PM CST
Stabilizing Nanodispersions in Personal Care and Cosmetic Applications
By: Tharwat Tadros, Wokingham; Lorna Kessell, Uniq…
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.
Dec 23, 2005 | 02:50 PM CST
Silicone-Based Vesicle Delivery Systems
By: Joanna Newton, Stephanie Postiaux, Catharine S…
Novel silicone-based vesicles can encapsulate and subsequently release a variety of cosmetic actives--both oil-soluble and water-soluble. This article discusses the silicone polyethers used to develop these vesicles and the methods used to evaluate both the silicone polyethers and the vesicles. One study describes the use of these vesicles to encapsulate retinyl palmitate.
Dec 13, 2005 | 11:21 PM CST
Hydrolysis-Resistant Esters
By: John A. Imperante, Phoenix Chemical
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.
Dec 13, 2005 | 11:20 PM CST
A Hydrophobically Modified Inulin Surfactant for Preparing and Stabilizing Nanoemulsions
By: T. Tadros, Consultant; E. Vandekerckhove, A. …
Nanoemulsions prepared and stabilized with hydrophobically modified inulin as the surfactant require much less surfactant than nanoemulsions prepared and stabilized using conventional surfactants such as alcohol ethoxylate because they have a reduced Ostwald ripening rate.
Dec 13, 2005 | 11:06 PM CST
Sugar: An Underestimated Natural Material
By: Barbara E Brockway, PhD, Optima Chemicals Ltd.…
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.
Nov 01, 2005 | 04:14 PM CST
Antichaotropic Salts for Stabilizing Cysteine
By: Albert Shansky, PhD, Albert Shansky Consultant…
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.
Sep 30, 2005 | 03:52 PM CDT
Using Perfluoropolyether Phosphate to Lower pH without Increasing Skin Irritation
By: Giovanni Pantini, Solvay Solexis SpA
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.