illustration of a beautiful womanSkin Barrier and the Cosmetic Scientist

By Gopinathan K. Menon

Pretty much everyone in the business of personal care—including the scientists (Formulation, Claims Substantiation, and Measurement Science departments), managers, directors, and vice-presidents, as well as marketing and sales professionals—know or at least believe they understand the barrier properties of skin.

illustration of a woman with beautiful hairInteractions of Peptides with Human Hair

by Roger L. McMullen

Peptides are commonly used in hair care products designed to repair the structural proteins of the hair fiber. Until recently, very little was known about the mechanism of interaction between peptides and hair proteins. In a recent study, researchers at the University of Minho in Portugal examined the interactions between low molecular weight peptides (about 10 amino acids in length) and isolated structural proteins from hair.

illustration of a womanThe Skin Aging Exposome

by The Cosmetic Chemist Staff

Exposome refers to the collective exposure of a person throughout a lifetime—from conception onwards—to various environmental elements that influence the overall health state of the individual. Exposure to certain elements is positive while other factors may negatively contribute to the health state of the human being. Exogenous sources could be solar radiation, chemicals, and infectious agents.

illustration of a man and woman putting together a light bulbThe Cosmetic Chemist Crossword Puzzle Mania

Win a $50 gift card!!! The subject of this month’s crossword puzzle is Skin Photoaging. We will give out a $50 gift card to the first person who sends us this month's crossword puzzle with the correct answers.

Complete the crossword puzzle.

illustration of woman with hairResearch Group in the Spotlight – Novel Sustainable Hair Dyes

This month's research group comes to us from the College of Textiles at North Carolina State University. Doctoral candidate Tova Williams, under the direction of Prof. Harold Freeman, is working diligently to bring us novel solutions in hair dye chemistry.















Molecule of the Week

molecular structure of guar hydroxypropyltrimonium chloride

Guar Hydroxypropyltrimonium Chloride












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