"Applications of Surface Chemistry in the Cosmetic Industry"

Vous êtes cordialement invités à la conférence "Applications of Surface Chemistry in the Cosmetic Industry" de Gustavo S. Luengo, l’Oréal Recherche and Innovation, Aulnay sous Bois, France, organisée par l'Institut Charles Sadron

Resumé:

A great diversity of materials are used to protect or improve the structural and sensorial properties of Surfaces (hair, skin, nail…). From shampoos to lacquers or gels, materials are used commonly used to perform a particular function (mechanical , optical, etc.) upon adsorption and/or penetration in the fiber or either after a particular change in a external conditions that may trigger its activation (temperature, weathering, etc.).
Knowledge of the structure and nature of the substrate is essential if we want to clearly determine the degree of improvement of its physical properties. This description will be further illustrated with a few examples of our current research efforts deciphering the physical chemical properties of hair at the bulk and surface level and at the macro, micro and sub-microscopic scale.
As an example of common surface modifications of the cosmetic substrate, we will describe the nature and properties of polymers commonly used in shampoos and conditioners. Alternatively, in the case of fiber reinforcing materials, we will also explain our recent sol-gel based strategies that allow the penetration of big macromolecular materials. In particular our studies on reactive sol–gel systems. Finally we will present examples of rheological behavior of gel formulations present in common products as a result of its degree of micro or nano-structuration. Our examples will show how these materials can be effectively tuned to the consumer’s advantage.

Les personnes souhaitant rencontrer Gustavo S. Luengo sont priées de prendre contact avec Carlos Marques (tel. 03 88 41 40 45 ou mail marques@unistra.fr)