Hair coloring compositions with a non-ammonia alkalizing agent
View Patent ↗Oxidative hair coloring compositions comprising a non-ammonia alkalizing agent, such as monoethanolamine, and hydrogen peroxide in a specific ratio. The compositions of the invention have a relatively high lift power for relatively low hair damage. The compositions may comprise little or no ammonia.
1. An oxidative hair coloring composition comprising, by weight of the composition:
at least 1.5% of a non-ammonia alkalizing agent selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, dipropanolamine, tripropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, 2-amino-2-hydroxymethyl-1,3-propanediol and mixtures thereof;
from 0.5% to 4% of hydrogen peroxide; and
oxidative primary dyes;
wherein the weight ratio of said non-ammonia alkalizing agent to hydrogen peroxide is higher than or equal to 1.10,
with the proviso that the composition does not comprise a quaternized copolymer of dimethyldiallylammonium and acrylic acid, a quaternized silicone and an acrylate-itaconate copolymer esterified with at least one fatty alcohol.
2. A composition according to claim 1 wherein the weight ratio of said non-ammonia alkalizing agent to hydrogen peroxide is of from 1.10 to 4.0.
3. A composition according to claim 2 wherein the weight ratio of said non-ammonia alkalizing agent to hydrogen peroxide is of from 1.20 to 3.0.
4. A composition according to claim 1 further comprising direct dyes.
5. A composition according to claim 1 comprising less than 0.5% by weight of ammonia.
6. A composition according to claim 5 comprising no ammonia.
7. A composition according to claim 1 comprising from 1.5% to 8% of said non-ammonia alkalizing agent by weight of the composition.
8. A composition according to claim 7 comprising from 2.0% to 6% of said non-ammonia alkalizing agent by weight of the composition.
9. A composition according to claim 1 wherein said non-ammonia alkalizing agent comprises monoethanolamine.
10. A composition according to claim 9 wherein said non-ammonia alkalizing agent consists of monoethanolamine.
11. A method for making an oxidative hair coloring composition comprising the steps of mixing in any order:
a tint component comprising a first non-ammonia alkalizing agent and oxidative primary dyes,
an oxidizing component comprising hydrogen peroxide, and
optionally a third component comprising a second non-ammonia alkalizing agent,
wherein the oxidative hair coloring composition obtained after mixing these components is according to claim 1 .
12. A method according to claim 11 wherein the first non-ammonia alkalizing agent and, when present, the second non-ammonia alkalizing agent are selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, monopropanolamine, dipropanolamine, tripropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, 2-amino-2-hydroxymethyl-1,3-propanediol and mixtures thereof.
13. A method according to claim 12 wherein the first non-ammonia alkalizing agent and, when present the second non-ammonia alkalizing agent, consists of monoethanolamine.
14. A method according to claim 11 wherein a second non-ammonia alkalizing agent is used and wherein the concentration by weight of the first non-ammonia alkalizing agent in the tint component is higher than the concentration by weight of the second alkalizing agent in the third component.