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New in Function (page 158 of 171)
Dec 19, 2005 | 01:41 AM CST
By: Louis L. Punto, Kevin Lou and Eva-Maria C. Har…
Pigment wetting, skin moisturization and gloss are three functions that can be obtained simultaneously from octyldodecyl/PPG-3 myristyl ether dimer dilinoleate, a new polymeric ester synthesized partly from one of the skin’s essential fatty acids.
Dec 19, 2005 | 01:39 AM CST
By: Todd Ostergaard, Alvaro Gomes, Kim Quackenbush…
A new multifunctional silicone quaternary polymer microemulsion for hair offers conditioning, as well as protection from heat, improved permanent color retention, enhanced body and volume, and product clarity.
Dec 19, 2005 | 01:37 AM CST
By: Kunio Shimada, Ph.D., NOF Corporation, Life Sc…
Studies reported here show that by forming a gel layer that coats the surfaces of damaged hair fibers, this new, cationic, biomimetic copolymer helps to restore the appearance of healthy hair.
Dec 13, 2005 | 11:37 PM CST
By: Klaus Weber, Schulke & Mayr GmbH
Adding diazolidinyl urea to a blend of organic acids (i.e., sodium benzoate and potassium sorbate) extends this sample blend’s applicable pH range up to a pH level of 7, provides protection from discoloration, and offers an alternative to parabenbased preservative blends.
Dec 13, 2005 | 11:24 PM CST
By: Randy Schueller and Perry Romanowski, Alberto …
This article introduces the beginner to fragrance chemistry by discussing fragrance ingredients, the development process, formulation issues and fragrance regulations in the EU.
Dec 13, 2005 | 11:23 PM CST
By: Germain Puccetti, EMD Chemicals Inc.
This article discusses the main commercial insect repellent active chemicals and their efficacies in light of their tolerance by the human skin and body. Implications for finished product formulation are also discussed.
Dec 13, 2005 | 11:21 PM CST
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
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 | 11:13 PM CST
By: Ken Klein, Cosmetech Laboratories
Whenever we are asked to formulate an emulsion, we think of and usually add a humectant. A humectant being defined as “a substance that promotes retention of moisture.” It is derived from Latin “hu-mecta-ns, hu-mecta-nt, present participle of hu-mecta-re, to moisten, from hu-mectus, moist, from hu-me-re, to be moist.” But these versatile materials deserve our respect. They have functions that go far beyond this simplistic definition!
Dec 13, 2005 | 11:10 PM CST
By: Pascale Rossi, Uniqema, Applied Research and T…
The solvent dimethyl isosorbide improves the delivery of hydrophilic actives, enabling it to enhance the color intensity and color uniformity of self-tanning formulations in tests reported here.