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Oct 28, 2011 | 01:45 PM CDT
By: Elsa Jungman, Cécile Laugel and Arlette Baille…
In cosmetics, parabens are widely used due to their low cost and efficacy. In recent years, however, some reports have claimed that these materials exhibit estrogenic activity, which has led to attempts to replace them in formulations. This article reviews penetration studies of parabens spanning the past 20 years to determine whether they pose a risk to human health.
Oct 28, 2011 | 01:38 PM CDT
By: Howard I. Maibach, MD, University of Californi…
As is described here, moisturizers can influence the properties and structure of corneocytes by influencing the SC and consequently, the skin water barrier function. This hydrative influence of moisturizers could be beneficial as well as destructive toward skin barrier function.
Oct 28, 2011 | 10:23 AM CDT
By: Robert Lochhead, Kelly McLeod and Willis Byrd,…
Nanostructured materials are being introduced to personal care technologies to offer better resistance to moisture, to enhance strength and to confer stimuli responsive behavior. Some of the scientific advances that build upon new knowledge in this emerging field are highlighted in this article.
Oct 28, 2011 | 10:18 AM CDT
By: Eric S. Abrutyn, TPC2 Advisors Ltd.
The formulation matrix delivery system is the key to effectiveness and acceptable consumer antiperspirant systems. The most common delivery systems are roll-ons (either aqueous or cyclosiloxane suspensions), aerosol (hydrocarbon propellant suspensions), extrudable clear gels (water-in-cyclosiloxane emulsions), extrudable opaque soft solids (anhydrous cyclosiloxane suspension pastes) or solid sticks (anhydrous cyclomethicone suspension solids).
Oct 28, 2011 | 10:14 AM CDT
By: Michael J. Fevola, PhD, Johnson & Johnson
Benzoic acid (BA) is a leading choice due to its long and successful history of use preserving foods, drugs and cosmetics. Affirmed as GRAS (Generally Recognized As Safe) by the US Food & Drug Administration (FDA), BA and its sodium salt, sodium benzoate (NaB), are perhaps the most globally acceptable preservatives that have managed to avoid the controversy associated with many of the industry’s tried-and-true preservatives.
Oct 05, 2011 | 02:12 PM CDT
By: Peter Tsolis, The Estee Lauder Companies; and …
Microemulsions have long assisted the pharmaceutical industry in delivering efficacious levels of an active ingredient to the skin by enhancing the active’s bioavailability, versus traditional solutions and dispersions.
Oct 05, 2011 | 12:05 PM CDT
By: Isabelle Van Reeth, Xinyan R. Bao, Yasuhiro Ka…
Mastering formulating techniques with water-in-silicone emulsifiers can help cosmetic chemists create stable emulsions that combine distinctive aesthetics with improved performance. Here, the authors describe how altering parameters including the water to silicone/oil ratio, mixing processes, emulsifier levels, the nature of the external and internal phases, and the presence or lack of co-emulsifiers affect the characteristics of final formulations.
Oct 05, 2011 | 11:58 AM CDT
By: Kedar Kumthekar and Jayashree Nagarkar, PhD, I…
Tocopherols and tocotrienols are the major constituents of almond oil, safflower oil and palm oil. They are necessary for the normal growth and metabolism of healthy skin. These oils were formulated in nourishing skin care products and massage creams as part of stable o/w emulsions and were found to have excellent storage stability, flow properties, spreadability and moisturizing properties.
Oct 05, 2011 | 11:49 AM CDT
By: Kerry Hanson and Christoper Bardeen, Universit…
In the present article, sunscreens containing the antioxidants vitamin E and diethylhexyl syringylidene malonate were tested for their efficacy in preventing UV-induced reactive oxygen species in the lower stratum corneum. The addition of the antioxidants was found to significantly improve the ability of low to high SPF sunscreens to attenuate ROS formation in UV-exposed skin.
Oct 05, 2011 | 11:40 AM CDT
By: Mike J. Fevola, Johnson & Johnson
Carbomers, a family of crosslinked acrylic acid polymers, are essential ingredients in numerous products, including: pharmaceuticals; cosmetics and personal care items; household, industrial and institutional care products; printing inks; adhesives and coatings. This column will explore the chemistry and properties of carbomers that have earned them this well-deserved reputation.