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Recent in Chemistry (page 4 of 9)

A Hair Dyeing Solution for the Dye-allergic Consumer

May 20, 2014 | Nicholas Blickenstaff and Garrett Coman, University of California at San Francisco and University of Utah, Salt Lake City; Ashley Edwards, Touro University, Vallejo, California; and Howard I. Maibach, MD, University of California at San Francisco

This article describes how to identify allergic contact dermatitis resulting from hair dye, and outlines prevention principles for those who wish to continue dyeing their hair despite being allergic—with clear implications for those formulating these products. The main sensitizers in hair dye are discussed, along with techniques to minimize exposure to these allergenic substances.

What’s Happening in Hair Damage, Protection and Repair

May 19, 2014 | Robert Lochhead, PhD, and Heather Pearson, The University of Southern Mississippi, Hattiesburg, MS, USA

Hair damage from environmental and cosmetic treatments is a continuing concern. Efforts are under way to understand hair degradation and devise means to protect and repair hair from the damage. This short review is an attempt to summarize recent advances toward protecting and repairing human hair.

Phenoxyethanol as a Safe and Important Preservative in Personal Care

Apr 22, 2014 | John Krowka, PhD, and Linda Loretz, PhD, Personal Care Products Council; Karolina Brzuska and Jose Filipe Almeida, PhD, Cosmetics Europe; Megan Diehl and Stanley J. Gonsior, The Dow Chemical Company; Andress Johnson, PhD, and Stephané Sellam, Thor Special

The effective preservation of personal care products and cosmetics is vitally important to inhibit microbial growth. Phenoxyethanol has a long history as an effective preservative, with well-documented human and environmental safety profiles. This is a valuable option in formulators’ and microbiologists’ toolboxes for safe and effective control of microbial growth, as is reviewed here.

Review and Modern Advances of Retinoids for Cosmetics

Apr 21, 2014 | Steven Isaacman, PhD, and Michael Isaacman, PhD, Nanometics LLC, Great Neck, NY, USA; Peter Smith, New York University, New York City, USA

For skin cancer, skin aging and acne, retinoids have proven both preventive and therapeutic. Successful efforts toward more bioavailable vitamin A derivatives and retinoid formulations have increased their use for cosmetic benefits. Recent work to further optimize retinoids and reduce their side effects has yielded a new generation of promising molecules, described here.

Under-eye Elasticity Through Film-forming with Betty Yu, PhD

Feb 24, 2014 | Katie Anderson, Cosmetics & Toiletries

Betty Yu, PhD, and her team at Living Proof have entered the skin care market with a flowable silicone polymer technology that cross-links upon activation to form a breathable, invisible film designed to contour and tighten the eye area, reducing the appearance of under-eye bags.

Armoring Enamel: New Paradigms for Combating Dental Decay

Feb 24, 2014 | Steven Isaacman, PhD, and Michael Isaacman, PhD, Nanometics LLC; and Kent Kirshenbaum, PhD, and Peter Smith, New York University

To protect enamel, new mechanisms in classic oral care continue to be uncovered, while modern advances mimic and enhance natural protective systems. New approaches to enamel repair include augmenting natural remineralization by creating reservoirs of ions and applying saliva biomimetics. Such technologies, described here, represent significant advances for repairing and protecting teeth noninvasively.

Lipsticks: How They Have Changed and Where They Are Going

Jan 14, 2014 | Rachel Mallon, Nunzio Ripamonti and Natasha Williams O’Hanlon, PhD; Oriflame Research and Development Ltd., Bray, Ireland

The composition of lipstick formulations and means of manufacturing and filling them have progressed significantly in the last 100 years. This article reviews the most notable developments in methods of production, innovations in both functional and active ingredients, and breakthroughs in processing. In addition, it explores what the future could hold for lipsticks.

Technically Speaking: UV Protection for Sensitive Skin

Jan 5, 2014 | 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.

Frontiers of Science Supports Cosmetic Research

Frontiers of Science Supports Cosmetic Research

Dec 30, 2013

On Dec. 12, 2013, at the Society of Cosmetic Chemists' (SCC) Annual Scientific Meeting & Technology Showcase, Rachel Grabenhofer, presented the Frontiers of Science Award to Joseph Schwarcz, PhD, from McGill University, on behalf of Cosmetics & Toiletries.

Frontiers of Science Supports Cosmetic Research

Frontiers of Science Supports Cosmetic Research

Dec 18, 2013

On Dec. 12, 2013, at the Society of Cosmetic Chemists' (SCC) Annual Scientific Meeting & Technology Showcase, Rachel Grabenhofer, presented the Frontiers of Science Award to Joseph Schwarcz, PhD, from McGill University, on behalf of Cosmetics & Toiletries.

Technically Speaking: Formulation Technologies and Other Topics

Dec 9, 2013 | Charles Fox, Independent Consultant

This column discusses the latest technology surrounding skin care, hair care, oral care, AP/DEO and sunscreen formulation. In addition, interesting raw material introductions for the personal care industry are also reviewed.

Silicone Safety and the Cosmetic Industry

Nov 14, 2013 | James Lambert, PhD, NuSil Technology LLC

The use of silicones in personal care products continues to expand because of the unique performance attributes they provide and their well-established record of safety. As a result, progressively larger volumes of silicones are being released to the environment, and interest in their life cycle has increased. The present article summarizes relevant fundamental chemical and physical properties of silicones and how these relate to material performance, safety and environmental fate.

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