RESORCINOL-FREE HAIR COLOURING COMPOSITIONS

Abstract

The present invention relates to hair colouring compositions free of resorcinol, 2-methyl resorcinol, 4-chloro resorcinol and resorcinol derivatives and free of methoxymethyl-p-phenylenediamine, said compositions comprising at least three dyes selected from at least one primary dye selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least two secondary dyes selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol, or at least two primary dyes selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least one secondary dye selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol.

Claims

1. Hair colouring compositions free of resorcinol, 2-methyl resorcinol, 4-chloro resorcinol and resorcinol derivatives, and free of methoxymethyl-p-phenylenediamine, comprising at least one primary dye selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least two secondary dyes selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol, or at least two primary dyes selected from p-toluenediamine sulphate, p-aminophenol, N-methyl-p-aminophenol sulphate and 1-hydroxyethyl-4,5-diamino pyrazole sulphate, and at least one secondary dye selected from hydroxyethyl 3,4-methylenedioxyaniline HCl, 2-amino-3-hydroxypyridine and 2-methyl-5-hydroxyethylaminophenol.

2. Compositions according to claim 1 comprising additional oxidative dyes.

3. Compositions according claim 2 containing at most 6% by weight of total oxidative dyes and at most 3% by weight of p-toluene diamine

4. Compositions according to claim 3 containing at most 2% by weight of p-toluenediamine.

5. Compositions according to claim 1 further comprising one or more additives, solvents, surfactants, emulsifiers, humectants, thickeners or conditioners.

6. Compositions according to claim 1 comprising an alkalising agent selected from ammonia, monoethanolamine, 1-amino-2-propanol, 2-amino-2-methyl-propanol, 2-amino-2-methyl-1,3 propanediol, 2-amino-2-ethyl-1,3-propanediol, tris(hydroxymethyl)aminomethane), sodium hydroxide, potassium hydroxide, urea, allantoin, arginine, lysine, tripotassium phosphate, sodium saccharin, triethanolamine or combinations thereof.

7. Compositions according to claim 1 in “ready to use” form comprising two or more ingredients to be mixed before use.

Description

EXAMPLES

[0048] The ingredients listed in the examples are named according to the INCI nomenclature (European Community Decision 2006/257/EC as amended—International Nomenclature of Cosmetic Ingredients).

[0049] Table 1 shows the formulas of the activators used. Formulas A1, A2, A3 and A4 represent the different strengths of the activators, namely 40, 30, 20 and 10 volumes respectively.

TABLE-US-00003 TABLE 1 Activators A1 A2 A3 A4 INGREDIENTS % % % % AQUA (WATER) q.s. to q.s. to q.s. to q.s. to 100 100 100 100 HYDROGEN PEROXIDE 12 9 6 3 CETEARYL ALCOHOL 3 3 3 3 CETEARETH-20 0.6 0.6 0.6 0.6 PHOSPHORIC ACID 0.1 0.1 0.1 0.1 SODIUM STANNATE 0.2 0.2 0.2 0.2 SODIUM LAURETH SULPHATE 0.1 0.1 0.1 0.1 PROPYLENE GLYCOL 0.5 0.5 0.5 0.5 DISODIUM PYROPHOSPHATE 0.1 0.1 0.1 0.1 DIMETHICONE 0.1 0.1 0.1 0.1 PEG-40 CASTOR OIL 0.5 0.5 0.5 0.5 PENTASODIUM PENTETATE 0.1 0.1 0.1 0.1 ETIDRONIC ACID 0.1 0.1 0.1 0.1

[0050] Table 2 shows the compositions of the hair colouring preparations in cream form used in the tests described below.

[0051] Compositions F2* F4* F6* are those according to the invention, while compositions F1, F3 and F5 are STANDARD comparative formulas containing resorcinols.

TABLE-US-00004 TABLE 2 Compositions in cream form F1 F2* F3 F4* F5 F6* (shade (shade (shade (shade (shade (shade 5.0) 5.0) 5.66I) 5.66I) 1.0) 1.0) AQUA (WATER) q.s. q.s. q.s. q.s. q.s. q.s. to 100 to 100 to 100 to 100 to 100 to 100 CETEARYL ALCOHOL 8 8 8 8 8 8 CETEARETH-50 7 7 7 7 7 7 STEARYL ALCOHOL 6 6 6 6 6 6 PROPYLENE GLYCOL 5 5 5 5 5 5 LAURYL ALCOHOL 2.8 2.8 2.8 2.8 2.8 2.8 PEG-40 HYDROGENATED 2 2 2 2 2 2 CASTOR OIL COCAMIDOPROPYL BETAINE 1.2 1.2 1.2 1.2 1.2 1.2 MYRISTYL ALCOHOL 1.2 1.2 1.2 1.2 1.2 1.2 PARFUM (FRAGRANCE) 0.8 0.8 0.8 0.8 0.8 0.8 DECYLTETRADECANOL 0.7 0.7 0.7 0.7 0.7 0.7 SODIUM SULPHITE 0.4 0.4 0.4 0.4 0.4 0.4 ERYTHORBIC ACID 0.3 0.3 0.3 0.3 0.3 0.3 POLYQUATERNIUM-22 0.2625 0.2625 0.2625 0.2625 0.2625 0.2625 EDTA 0.2 0.2 0.2 0.2 0.2 0.2 BISABOLOL 0.1 0.1 0.1 0.1 0.1 0.1 OLETH-5 PHOSPHATE 0.1 0.1 0.1 0.1 0.1 0.1 DIOLEYL PHOSPHATE 0.1 0.1 0.1 0.1 0.1 0.1 TOLUENE-2,5-DIAMINE SULPHATE 2.08 0.953 — — 4.3 3 1-HYDROXYETHYL 4,5- — — 2.39 1.785 0.08 0.05 DIAMINO PYRAZOLE SULPHATE p-AMINOPHENOL — — 0.34 — — — 2,4-DIAMINOPHENOXYETHANOL HCl 0.07 0.07 0.468 0.38 0.56 0.4 HYDROXYETHYL 3,4- — 0.407 — — — 1.4 METHYLENEDIOXYANILINE HCL 2-AMINO-3-HYDROXYPYRIDINE — 0.12 — 0.1 — 0.15 2-METHYLRESORCINOL 0.271 — — — 0.1 — RESORCINOL 0.63 — 0.025 1 — m-AMINOPHENOL 0.136 0.12 0.975 0.699 0.7 0.49 p-METHYLAMINOPHENOL — — 0.353 — — SULPHATE 2-METHYL-5-HYDROXYETHYL- — — — 0.1 — — AMINOPHENOL ETHANOLAMINE (MEA) 0.95 0.71 1.75 0.88 4 2.8 AMMONIA 1.8 1.8 1.8 1.8 1.2 1.2 Total dyes 3.18 1.67 4.198 3.417 6.84 5.49 It should be noted that formula F2* according to the invention contains 47% less dyes, and in particular 54% less p-toluenediamine (PTD). Formula F4* according to the invention contains 18% less total dyes. Formula F6* according to the invention contains 19% less dyes, and in particular 30% less p-toluenediamine (PTD).

[0052] Table 3 shows examples of hair colouring preparations in gel form.

[0053] Composition F8* is a formula according to the invention, while F7 is a STANDARD comparative formula containing resorcinols.

TABLE-US-00005 TABLE 3 Gel compositions shade 6.3 (dark blonde gold) Ingredients (INCI) F7 F8* AQUA q.s. q.s. to 100 to 100 PROPYLENE GLYCOL 7 7 HYDROXYETHYLCELLULOSE 2 2 CARBOMER 1 1 ACRYLATES/METHACRYLAMIDE COPOLYMER 0.3 0.3 SODIUM HYDROXIDE 1 1 PARFUM (FRAGRANCE) 0.6 0.6 SODIUM SULPHITE 0.5 0.5 ERYTHORBIC ACID 0.3 0.3 EDTA 0.2 0.2 TOLUENE-2,5-DIAMINE SULPHATE 1.271 0.4 p-AMINOPHENOL 0.19 0.5 HYDROXYETHYL 3,4-METHYLENE- — 1 DIOXYANILINE HCL 2-AMINO-3-HYDROXYPYRIDINE 0.07 0.13 m-AMINOPHENOL 0.065 0.1 2,4-DIAMINOPHENOXYETHANOL HCl 0.009 — 4-CHLORORESORCINOL 0.547 — 2-METHYLRESORCINOL 0.306 — ETHANOLAMINE (MEA) 3.7 3.7 Total dyes 2.458 2.13

[0054] It should be noted that formula F8* according to the invention contains 13% less dyes, and in particular 68% less p-toluenediamine (PTD).

[0055] Test 1: Colour Result

[0056] The colour test was conducted on 100% white homogenised natural IHIP locks.

[0057] Formulas F1 to F8, suitably mixed with activators A1 to A4, were applied to the locks.

[0058] In particular:

[0059] Compositions F1 and F2* were mixed at the ratio of 1:1.5 with activator A3 from Table 1.

[0060] Compositions F3 and F4* were mixed at the ratio of 1:1.5 with activator A2 from Table 1.

[0061] Compositions F5 and F6* were mixed at the ratio of 1:1.5 with activator A4 from Table 1.

[0062] Compositions F7 and F8* were mixed at the ratio of 1:1.5 with activator A3 from Table 1.

[0063] The colour was left to develop on the locks for 35 minutes at a temperature of 30° C.

[0064] The locks were then rinsed and dried.

[0065] The colour result, in terms of level and tone, was evaluated by 6 industry experts, who scored it on the following scale:

[0066] 1 colour result similar to reference STANDARD

[0067] 2 slight difference in level and/or tone compared with reference STANDARD

[0068] 3 colour result different from reference STANDARD.

[0069] The mean value of the scores is shown in Table 4.

TABLE-US-00006 TABLE 4 Lock colour test. Formulas evaluated MEAN COLOUR RESULT SCORE F1 vs. F2* 1.16 F3 vs. F4* 1.3 F5 vs. F6* 1 F7 vs. F8* 1.5

[0070] The colour result in all shades is also similar without resorcinols or derivatives thereof.

[0071] Test 2: Stability of Emulsion.

[0072] Compositions F1 to F6 were placed in glass jars for 15 days at 50° C. (accelerated stability protocol), then removed and kept at room temperature for 24 h. They were then visually examined by 6 experts to evaluate whether the emulsion had separated or was homogeneous and consequently stable.

TABLE-US-00007 TABLE 5 Composition stability test. COMPOSITION EVALUATION F1 NOT SEPARATED F2* NOT SEPARATED F3 SLIGHT SEPARATION F4* NOT SEPARATED F5 SLIGHT SEPARATION F6* NOT SEPARATED

[0073] The compositions according to the invention are more stable over time due to the smaller amount of sulphate dyes they contain.

[0074] Test 3 Colour Fade: Resistance of Colour to Washing

[0075] A Konica Minolta colorimeter was used to evaluate colour fading.

[0076] In the CIELAB colour space, L* indicates sheen and a* and b* are the colour coordinates. a* and b* indicate the colour directions: +a* is the direction of red, −a* is the direction of green, +b* is the direction of yellow and −b* is the direction of blue.

[0077] Differences in colour can be expressed by the ΔE values, which are defined by the following equation:

ΔE=[(ΔL*)2+(Δa*)2+(Δb*)2]½

[0078] For the following examples, parameter ΔE was considered.

[0079] The lower the value of ΔE, the less the colour will fade after washing.

[0080] The test was conducted on IHIP hair locks level 10 Lightest Blonde, which were dyed with formulations F1F2* F3 and F4* mixed with activator A3 at the ratio of 1:1.5.

[0081] The product was left on the hair for 30 minutes at the temperature of 30° C.

[0082] The locks were then rinsed, dried and measured with the colorimeter.

[0083] The locks were then washed 9 times consecutively with Alfaparf Salon Line shampoo, dried and measured again with the colorimeter.

TABLE-US-00008 TABLE 6 Colour fade due to washing Formula ΔE F1 −6% F2* −4% F3 −9% F4* −7%

[0084] Table 6 shows the % fade values after 9 washes, and the result obtained is comparable.