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New in Research (page 83 of 92)
Jan 02, 2006 | 11:26 AM CST
Grape Seed Extracts to Carry NSF Certification Mark
Four grape extract products have received authorization to use the NSF certification marks to certifying their nutraceutical quality.
Dec 23, 2005 | 06:02 PM CST
Sunscreen Efficacy Validation and Other Topics
By: Charles Fox, Independent Consultant
Care pH on epidermal permeability: Hachem et al. have studied the effect of pH on epidermal permeability and skin barrier homeostasis.
Dec 23, 2005 | 05:57 PM CST
Novel Approaches for Molecular Biology and Skin Care Products
By: Lawrence A. Rheins, PhD, and Nicholas Benson, …
The increasing demand for performance-driven personal care products and the need to understand a product’s mechanism of action provides a scientific challenge to the industry formulator, toxicologist and expert evaluator.
Dec 23, 2005 | 05:43 PM CST
Topical Vitamins and Other Topics
By: Charles Fox, Independent Consultant
Care Sunless tanning with dihydroxyacetone: Nguyen et al. have studied the factors influencing sunless tanning with dihydroxyacetone. Sunless tanning preparations have been used for more than 50 years and are still very popular because they provide temporary pigmentation resembling an ultraviolet-induced tan. The pigment is the product of reactions between dihy-droxy-acetone (DHA) and amino acids in the stratum corneum.
Dec 23, 2005 | 05:29 PM CST
Chirality
By: Larry Plonsker
Chirality is an important property in pharmaceuticals and is receiving increasing attention in cosmetics. What is it, and what is its significance in these two areas?
Dec 23, 2005 | 05:27 PM CST
A Novel Whitening Agent and Other Topics
By: Charles Fox, Independent Consultant
Care Frequency of fragrance allergy: Buckley et al. investigated the frequency of fragrance allergy in patch-tested patients. The most likely age of sensitization to fragrance chemicals is unknown. These investigators patch tested 23,846 patients over a 14-year period. They report that 8.4% of the females and 6.4% of the males tested were allergic to fragrance materials. The frequency of fragrance allergy was low in the first two decades of life. It gradually increased in females after the age of 20 years and peaked in the 60-year range at 14.45 of those tested. The authors conclude that the findings support the hypothesis that allergy to fragrance results from a combination of repeated environmental exposure and age-related susceptibility factors.
Dec 23, 2005 | 05:25 PM CST
Formulating for Efficacy
By: Johann W. Wiechers, PhD, Caroline L. Kelly, Tr…
Via the introduction of the Relative Polarity Index, the authors show that the choice of emollients in cosmetic formulations determines the total amount of skin penetration of active ingredients whereas the choice of the emulsifier determines its distribution within the skin.
Dec 23, 2005 | 05:14 PM CST
A Foaming Cleanser and Other Topics
By: Charles Fox, Independent Consultant
Care Isoflavonoids in skin care: Beiersdorf discloses the use of isoflavonoids to fight skin aging and acne. The invention concerns cosmetic and dermatological preparations that contain isoflavonoids and cyclodextrins. Cyclodextrins are added in order to increase the solubility of the isoflavonoids in the preparations that are applied against skin aging and acne. An example is shown in Formula 1.
Dec 23, 2005 | 05:12 PM CST
Effects of Occlusion (II): Wound Healing
By: Hongbo Zhai, MD, and Howard I. Maibach, MD, Un…
This is the second article in a series discussing effects of occlusion on skin. (The series opened in November 2003 with a focus on percutaneous absorption.) The present article focuses on the effects of occlusive and semipermeable membranes on wound healing and summarizes related data.
Dec 23, 2005 | 04:54 PM CST
Cosmetic Textiles–A New Functionality of Clothes
By: H.-J. Buschmann and E. Schollmeyer, Deutsches …
Cyclodextrins form complexes with a large number of different organic compounds such as cosmetic and pharmaceutical substances. Textile materials with permanently fixed cyclodextrins may act as delivery systems for these compounds. Skin compounds complexed within these cyclodextrins can be released and reloaded, but some problems still have to be solved.