Frédéric Guerin

Hair dyeing method using a derivative of hematoxylin, of hematein, of brazilin or of brazilein, one metal salt, hydrogen peroxide and (bi)carbonate

Hair dyeing method based on a composition comprising at least one ortho-diphenol, one metal salt, hydrogen peroxide and (bi)carbonate

Hair compositions comprising at least one disulfide direct dye and at least one alkaline hydroxide agent and simultaneous hair shaping an dyeing processes

Dyeing Composition Comprising at Least One Dye Precursor and One Amphiphilic Block Copolymer

Hair composition comprising at least one direct disulfide dye and at least one alkali hydroxide agent and method of simultaneous styling and dyeing.

Process for rapidly colouring and decouring human keratinic fibres with direct dyes

Process for rapid dyeing and rapid decoloration of human keratin fibres with certain direct dyes

COMPOSITION COMPRISING AT LEAST ONE ORTHO-DIPHENOL, METAL SALT, HYDROGEN PEROXIDE AND (BI)CARBONATE AND HAIR DYEING METHOD THEREWITH

Use of a chromoionophore and/or fluoroionophore for dyeing human keratin fibres, dyeing compositions and methods

Composition for dyeing keratin fibres comprising a direct dye bearing a disulfide/thiol function, a nonionic surfactant, an amphoteric surfactant, an ethoxylated fatty alcohol, an alkaline agent and a reducing agent