Methods and compositions for improving the quality and durability of color in artificially colored hair

Abstract

The present disclosure relates to compositions and methods for improving the quality and durability of color in artificially colored hair. The methods employ salts of hydroxy-polycarboxylic acids. The salts of the hydroxy-polycarboxylic acids are incorporated into a pre-color treatment composition (a composition applied to the hair prior to coloring the hair) or added directly to the coloring composition (in-color treatment composition). The salts add alkalinity to the coloring process. Hydroxy-polycarboxylic acids are incorporated into a post-color treatment composition (a composition applied to the hair after coloring the hair). The salts and the acids act as chelators, fixing the dye molecules to the hair, thereby imparting color fading resistance to the hair.

Description

FIELD OF THE DISCLOSURE[0001]The present disclosure relates to compositions and methods for providing color protection to hair, in particular, for improving the quality and durability of color in artificially colored hair. The methods employ salts of hydroxy-polycarboxylic acids that provide alkalinity to the coloring process. The methods also use the hydroxy-polycarboxylic acids themselves, which along with the salts, act as chelators.BACKGROUND[0002]There are many products available for changing the natural color of hair. The process of changing the color of hair can involve either depositing an artificial color onto the hair, which provides a different shade or color to the hair, or lifting the color of the hair, such as for example, from a dark brown shade to a medium brown or a light brown shade. Hair color can be changed using permanent, semi-permanent, or temporary hair coloring products.[0003]Many consumers desire a permanent color change and therefore use products containin...

AI Technical Summary

Benefits of technology

The patent is about a method for improving the durability of colors in artificially colored hair. The method involves using salts of hydroxy-polycarboxylic acid in a pre-color treatment and adding them directly to the coloring composition. These salts act as chelators, fixing the dye molecules to the hair, thereby inhibiting color fading. The patent also describes a method for inhibiting color fading using a post-color treatment composition containing hydroxy-polycarboxylic acids. The salts in the pre-color treatment act as chelators and are combined with the hydroxy-polycarboxylic acids in the post-color treatment. The patent also describes kits containing the necessary compositions for carrying out the methods. The technical effects of the patent is to provide a more durable and vivid color in artificially colored hair.

Problems solved by technology

Unfortunately, however, in just a few short weeks, or in some cases even less, the color begins to fade due to washing or exposure to environmental conditions.

For instance, gorgeous rich brown colors become muddy and dull, beautiful shades of blonde turn brassy, and vibrant reds do not look so vibrant anymore acquiring golden, orange or brownish tonalities not desirable to the consumer.

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