Hair colouring compositions

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/19 (2006.01) A61K 8/22 (2006.01) A61K 8/41 (2006.01) A61Q 5/10 (2006.01)

Patent

CA 2640935

The present invention relates to an oxidative hair colouring and bleaching composition comprising an oxidizing agent, a source of carbonate ions, an alkalising agent, and specific dyes, as defined herein below, utilised at pH 9.5 and below which improve colour delivery and intensity, excellent dye deposition and colour and improved grey coverage, particularly for dark shades such as brown or black. Moreover, the compositions of the present invention also exhibit low odour and deliver a high level of lift and lightening equal to the currently utilised ammonia/peroxide systems, whilst reducing the concentration of peroxide and reducing the hair fibre damage.

La présente invention concerne une composition de décoloration et de coloration des cheveux oxydante comprenant un agent oxydant, une source d'ions carbonates, un agent alcalinisant et des colorants particuliers, tels que définis ci-dessous, utilisée à un pH inférieur ou égal à 9,5, laquelle améliore la répartition et l'intensité de la couleur, est excellente en termes de dépôt du colorant et de couleur et améliore le recouvrement du gris, en particulier pour les teintes foncées telles que le brun ou le noir. De plus, les compositions de la présente invention présentent également une faible odeur et fournissent un niveau élevé de différence de ton et d'éclaircissement égal à celui des systèmes ammoniac/peroxyde actuellement utilisés, tout en réduisant la concentration de peroxyde et en réduisant l'endommagement des fibres des cheveux.

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