Cosmetiscope_JAN-2015_Graphic9March 19-20th: NYSCC Practical Rheology Course

The NYSCC is returning to Princeton University for another event covering the science of rheology. This year we are happy to announce that we contracted with Dr. Hemi Naé of Hydan Technologies to bring us his acclaimed two-day Practical Rheology Course. The course will be taught on March 19th and 20th at the Friend Center on the Princeton University campus. This special in-depth course is for everyone working in technical marketing, research, development, processing, and quality control and tailored to the needs of the personal care industry. Joining Hemi will be instrument vendors to explain and demo their rheometers.  Princeton University Princeton, NJ March 19-20, 2015 Instructor: Dr. Hemi Naé, Ph.D. …. MORE

Applications of Maleic Anhydride Chemistry in Skin Care, Biomedical Devices, and Transdermal Delivery. Part II

February 2015 Cosmetiscope – Roger L. McMullen

Cosmetiscope 2015In the first article of this series, we discussed several applications of maleic anhydride chemistry to phenomenon occurring in skin. Copolymers of maleic anhydride are used universally in the biomedical industry as bioadhesives, allowing for the attachment of biomedical devices to the skin. Not surprising, the same types of polymers found their way into personal care adhesive strips designed to remove unwanted keratotic debris. In a much different application, maleic anhydride derivatives maneuvered into antiperspirant formulations where they help to reduce the concentration of aluminum salts.

Transdermal drug delivery is another explosive area where hydrogels made of maleic anhydride polymers act as key ingredients of the delivery formulation. As you will see in the paragraphs that follow there have been many advances made in optimizing transdermal delivery components over the last decade. Much of this understanding comes from studies aimed at exploiting the hydrogel properties of maleic anhydride polymers used in conjunction with plasticizing agents. Moreover, maleic anhydride derivatives have been at the forefront of key advances in transdermal delivery including microneedles and nanoparticle technology …. MORE