L'oreal

Societe Anonyme Dite: L'oreal

Jacqueline Gallien

Gregoire Kalopissis

Bernard Jacquet

Daniel P Bauer

Jean Phillipe Chalaye

Andree Bugaut

Hubert Gaston-Breton

Jean Gascon

A process is described which consists, in a first stage, in applying a composition based on a substance of vegetable or animal origin, a synthetic organic substance or a mineral substance, in suspension or in solution in a solvent and having a viscosity suitable for application to the hair, or as a powder, and making it possible to prevent or substantially to limit the passage of the dyestuffs and/or of the dyestuff precursors as far as the scalp, and, in a second stage, in dyeing the hair using one or more compositions, at least one of which contains either an oxidizable dyestuff or a direct dyestuff, the dyeing being followed, after an interval sufficient for coloring the hair, by rinsing and optionally by shampooing.

Hair-dyeing process involving protection of the scalp

Dye compositions containing the oxidation dye: ##STR1## and the method of using it to dye live human hair.

N-Thioureido and N-ureido phenylene diamines and method of preparing same

Growing community of inventors

Aulnay-sous-Boi, France

Jacqueline Gallien