Recent in Chemistry (page 6 of 9)
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Technically Speaking: From Keratin Regulation Through Wet Wipes Emulsion Literature Findings
Aug 8, 2013 | Charles Fox, Independent Consultant
The following column discusses the latest technological advancements in the fields of hair care, skin care, oral care, sunscreen, color cosmetics and more.
Chinese Licorice Extract for Anti-aging, Antibacterial and Breath-freshening Effects
Aug 2, 2013 | Stefan Gafner, PhD, Tom’s of Maine
This article reviews in vitro studies that have found Chinese licorice extract to impart potent antibacterial and soothing properties, which make it an interesting candidate for applications in oral and personal care. Further, a clinical study is described in brief, assessing the ability of a supercritical CO2 extract from Chinese licorice to impart breath-freshening properties.
Chinese Licorice Extract for Anti-aging, Antibacterial and Breath-freshening Effects
Aug 2, 2013 | Stefan Gafner, PhD, Tom’s of Maine
This article reviews in vitro studies that have found Chinese licorice extract to impart potent antibacterial and soothing properties, which make it an interesting candidate for applications in oral and personal care. Further, a clinical study is described in brief, assessing the ability of a supercritical CO2 extract from Chinese licorice to impart breath-freshening properties.
Caprylyl Glycol/Phenethyl Alcohol Blend for Alternative Preservation of Cosmetics
Aug 2, 2013 | Paola Ziosi, Stefano Manfredini, Alberta Vandini and Silvia Vertuani, University of Ferrara; and Massimo Fraternali, Akema Fine Chemicals
In recent years, the safety of traditional preservatives has been called into question. Therefore, there is a need for alternatives that are effective, safe and sustainable—and that are non-controversial. In response, the present work investigates a mixture of caprylyl glycol and phenethyl alcohol, which is shown to provide antimicrobial activity in various skin and hair care formulations.
Formulating Focus: The Influence of Emollients on Skin Penetration
Aug 1, 2013 | J.W. Wiechers, PhD, JW Solutions
This column will discuss ways in which ingredients can positively affect the partition coefficient of the active between the formula and the skin. By carefully selecting the emollients used in a formulation, formulators can increase the delivery and clinical efficacy of a formulation without increasing the level of the active ingredient.
Technically Speaking: From Enzymes to Fragrance Ingredient Testing: A Literature Overview
Aug 1, 2013 | C. Fox, Independent Consultant
The following column discusses the latest technological advancements in the fields of hair care, skin care, oral care, sunscreen, color cosmetics and more.
Heralding the Future, Appreciating the Past
Jul 26, 2013 | Laurie DiBerardino
In this month’s issue, we honor Maison “Ed” G. deNavarre. Not only did this legend inspire the creation of the IFSCC and pull together an encyclopedia of knowledge that still resonates, he drove emulsion technology to new heights.
Improving the Solubility of Benzoyl Peroxide: A Review
Jul 17, 2013 | James Ziming Sun, PhD, Diversapack of California; and Alex Wang Sun, Tufts University
In this review, the authors examine studies relating to the solubility of BPO. The clinical trials discussed show that compared with suspended BPO, BPO solubilized by dimethyl isosorbide reduced P. acnes and decreased both inflammatory lesions/irritation and the emergence of antibiotic-resistant P. acnes strains. This reveals the importance of solubilizing BPO for improved efficacy and safety.
Developments in Ceramide Identification, Synthesis, Function and Nomenclature
Jul 8, 2013 | Mike Farwick, Peter Lersch and Betty Santonnat, Evonik Goldschmidt GmbH; Kees Korevaar, Cosmoferm B.V.; and Anthony Vincent Rawlings, AVR Consulting Ltd.
Advances have been made in recent years to better understand ceramides, as the authors describe here. However, since not all ceramides have the same structure, the nomenclature in the literature and on product labels needs clarification. The Personal Care Products Council recently agreed upon new nomenclature based on four molecular structures, which the authors also discuss.
Formulating at pH 4-5: How Lower pH Benefits the Skin and Formulations
Jul 3, 2013 | Johann W. Wiechers, PhD, JW Solutions
Most skin products are formulated around pH 6 but the latest research in skin biology suggests the skin is significantly more acidic—around 4.7. Here, the author shows how formulating for this natural pH can enhance the skin penetration of actives, reduce the amount of preservatives required, and increase chemical stability.
Profile of Mica
May 31, 2013 | Michael J. Fevola, PhD, Johnson & Johnson
Mica is an inorganic material found in a wide variety of cosmetic and personal care products. Its use has been reported in more than 7,100 products, making it one of the most important mineral ingredients used in cosmetics.
Amphiphilic Silicones to Extract Botanical Actives
May 30, 2013 | Anthony J. O'Lenick, Jr., Siltech LLC, and Kevin O'Lenick, SurfaTech Corp.
Silicone-based compounds enable chemists to extract the desired fractions of materials from plants as well as impart cosmetic aesthetics. Here the authors discuss how to extract actives using amphiphilic silicones that have different partition coefficients, which are obtained by altering the ratio of oil-, water- and fluoro-soluble groups on the silicone molecule.