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Methods and compositions for removing color from color-treated hair

a technology of color-treated hair and composition, which is applied in the field of methods of removing color from color-treated or pre-dyed hair, can solve the problems of hair fiber damage, may or may not be used, and approach has significant drawbacks of hair fiber damag

Active Publication Date: 2021-12-02
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes methods and compositions for removing direct dyes from hair. The methods involve contacting the hair with a composition containing an organic salt, such as an imidazolium-based compound or an ammonium-based compound, and a surfactant. The composition can also contain a co-surfactant or a cyclic compound. The technical effect of the patent is to provide a more effective and efficient way to remove direct dyes from hair.

Problems solved by technology

These dyes may or may not be used in the presence of an oxidizing agent.
However, those approaches have significant drawbacks of damaging hair fibers.

Method used

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  • Methods and compositions for removing color from color-treated hair
  • Methods and compositions for removing color from color-treated hair
  • Methods and compositions for removing color from color-treated hair

Examples

Experimental program
Comparison scheme
Effect test

example 1

Removal of HC Blue 15 Using BMIM OAc and SLES

[0426]Hair swatches dyed with HC Blue 15 (Log Pow value around 3.47) were treated with BMIM OAc and sodium laureth sulfate (SLES) at varying concentrations using the protocol described above. The resulting ΔE values are shown in the below table, as well as in FIG. 1.

ConcentrationΔEof organic0 wt.3 wt.6 wt.12 wt.salts (wt. %)% SLES% SLES% SLES% SLES09.0621.0821.8121.8413.5828.6——51.0741.0340.07—105.6147.1——258.639.0——

[0427]As seen from FIG. 1 and the table above, the control sample (with no organic salt or SLES) had a ΔE of 9.06 (approximately 9.1). The results for increasing BMIM OAc concentration alone are reproduced from above. SLES alone enhances removal of dye, increasing the ΔE to around 21-22. Interestingly, increasing concentrations of SLES do not appear to further increase the ΔE. However, once the minimum concentration of SLES is added to BMIM OAc, the ΔE increases well beyond the ΔE for either component alone. This demonstrates ...

example 2

Removal of HC Blue 15 Using EMIM Ethylsulfate and SLES

[0428]Hair swatches dyed with HC Blue 15 (Log Pow value around 3.47) were treated with varying concentrations in water of EMIM ethylsulfate and SLES at 3% concentration using the protocol described above. The resulting ΔE are shown in the below table, as well as in FIG. 2.

Concentration ofΔEorganic salt (wt. %)0 wt. % SLES3 wt. % SLES09.121.112.730.052.132.3101.533.5259.335.25026.827.2

[0429]As seen from FIG. 2 and the table above, the control sample (with no organic salt or SLES) had a ΔE of approximately 9.1. The results for increasing EMIM ethylsulfate concentration alone are reproduced from above. SLES alone enhances removal of dye, increasing the ΔE to around 21-22. As noted in the previous example, increasing concentrations of SLES do not appear to further increase the ΔE. However, once the minimum concentration of SLES (3%) is added to EMIM ethylsulfate, the ΔE increases well beyond the ΔE for either component alone. This de...

example 3

Removal of Hydroxyanthraquinoneaminopropyl Methyl Morpholinium Methosulfate Using BMIM OAc and SLES

[0430]Hair swatches dyed with hydroxyanthraquinoneaminopropyl methyl morpholinium methosulfate (Log Pow value around 0.89) were treated with BMIM OAc and / or SLES solutions using the protocol described above except carried out at 23° C. The resulting ΔE are shown in the below table, as well as in FIG. 3.

10% BMIM10% BMIMOAc - 6%TreatmentWater onlyOAc6% SLESSLESΔE2.97.518.238.7

[0431]As seen in FIG. 3 and the table above, the ΔE value significantly increases when dyed hair fibers are treated with a mixture of 6% SLES and 10% BMIM OAc, indicating that adding BMIM OAc to the SLES solution (6%) significantly boosts the color removal efficacy of hydroxyanthraquinoneaminopropyl methyl morpholinium methosulfate. In fact, the mixture greatly outperforms either the BMIM OAc or SLES by itself, indicating a synergistic effect.

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Abstract

The disclosure relates to compositions and methods for removing direct dyes from hair, the methods comprising contacting hair with a composition comprising (i) at least one organic salt selected from imidazolium-based compounds and / or ammonium-based compounds, and (ii) at least one surfactant. The compositions can further contain at least one co-surfactant and / or cyclic compound.

Description

FIELD OF THE DISCLOSURE[0001]The present disclosure generally relates to methods of removing color from color-treated or pre-dyed hair, as well as compositions for use in removing color from color-treated or pre-dyed hair, and more particularly using organic salts to remove direct dyes from color-treated or pre-dyed hair.BACKGROUND[0002]The process of changing the color of hair can involve depositing an artificial color onto the hair which provides a different shade or color to the hair, and / or lifting the color of the hair, such as lightening the color of dark hair to lighter shades.[0003]Imparting a color change or color effect on hair can be done using permanent, semi-permanent, or temporary hair coloring products. Semi-permanent dyeing uses direct dyes, which are nonionic or ionic dyes and colored compounds capable of producing a more or less pronounced change of the natural color of the hair. These dyes may or may not be used in the presence of an oxidizing agent. In contrast w...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61K8/49A61K8/41A61K8/60
CPCA61K8/4946A61K2800/10A61K8/604A61K8/416A61Q5/08
Inventor ZHANG, GUOJINRUGHANI, RONAK
Owner LOREAL SA