Color depositing shampoo

Abstract

A composition for coloring and shampooing hair substantially free, preferably totally and completely free, of anionic surfactants, comprising at least one cationic dye, n-methyl acyl glucamide with a carbon chain length from 8 and 20, inclusive, preferably 8 and 10, an aqueous carrier, and at least one stabilizer of anti-oxidant and free radical scavanger. By weight, (based on the total weight of the composition), the composition comprises 0.0005% to 3.0% cationic dye, 2.5 to 30% n-methyl acyl glucamide, 30 to 70% water, and 0.01 to 0.5% stabilizers of anti-oxidant and free radical scavenger. The present invention relates to hair cleaning compositions containing at least one cationic dye, a nonionic or amphoteric surfactant, a fragrance, and a stabilizer (antioxidant).

Description

CROSS REFERENCE[0001]This application is a continuation of, and claims the benefit of, U.S. application Ser. No. 15 / 894,348 filed Feb. 12, 2018 expected to issue as U.S. Pat. No. 1,0245,221, which is a continuation-in-part of, and claims the benefit of, U.S. application Ser. No. 15 / 140,064 filed Apr. 27, 2016, now U.S. Pat. No. 9,889,080, which claims the benefit of U.S. Provisional Patent Application No. 62 / 158,296 filed on May 7, 2015; U.S. application Ser. No. 15 / 894,348 filed Feb. 12, 2018 also claims the benefit of U.S. Provisional Application Ser. No. 62 / 546,903 filed on Aug. 17, 2017; each which is expressly incorporated herein in its entirety by reference thereto.FIELD OF THE INVENTION[0002]The present invention relates to compositions for coloring and cleansing hair using a one-part formulation. More specifically, the invention relates to shampoo compositions containing at least one cationic dye, a nonionic or amphoteric surfactant, a fragrance, and a combination of two sta...

AI Technical Summary

Benefits of technology

The patent text discusses the discovery of a new combination of ingredients that can be used to create a color depositing shampoo with desirable foaming properties. This combination includes a specific nonionic surfactant and a cationic dye. The use of this combination eliminates the need for extra dye and anionic surfactant. The shampoo formula also includes specific stabilizers to improve its stability and shelf life. Overall, the invention provides a more efficient and effective color depositing shampoo with improved foaming and stability.

Problems solved by technology

One of the main drawbacks for cationic dyes in many types of hair care products is they are not useful in combination with or within products containing anionic ingredients, particularly anionic surfactants.

A shampoo that does not foam or does not foam adequately or with a suitable foam quality generally has perceived consumer negatives) and reduced color deposition.

The combination of the two could also cause precipitation of an unwanted anionic / cationic complex.

Consequently, existing color depositing shampoos must use greater amounts of dye in the products to account for the “waste” causing higher costs of goods and thus higher retail prices effectively rendering combined cationic dye with anionic surfactant products highly difficult to market.

One problem with coloring shampoos which are generally free of anionic surfactants (that is, they are based on nonionic, amphoteric and / or cationic surfactants) is that they have a tendency not to foam adequately or may have poor sensory properties associated with the foaming, such as a tendency for any foam that does generate to generate slowly, spread slowly, or to dissipate quickly.

The viscosity of the product(s) is also difficult to control.

Addition of a small amount of an anionic surfactant (which adds to the production steps and increases cost of goods) is sometimes done to improve the foaming properties of a dye product made with a nonionic, amphoteric and / or cationic surfactants, knowing the resulting product will suffer from decreased dye deposition and / or suffer long term stability issues such as tonal shifts, precipitation or separation.

The bleaching or degradation of the dye molecule renders it inactive, creates problems with efficacy and limits the shelf life of a finished hair color product.

However, some fragrances, in particular terpenes and aldehydes, are very sensitive to oxidation by molecular oxygen.

The consequences are not only a loss of sensorial properties, but also the appearance of off-notes and / or undesirable coloring.

The oxidation may also develop possible irritation, allergy and sensitivity and free radicals may react with other components within a formula.

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