Hair treatment compositions containing amino acids

1. A composition for treating or caring keratin fibers comprising:

(a) at least one negatively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(b) at least one positively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(c) at least one silicone copolymer; and

(d) at least one nonionic emulsifier;

wherein all amounts are relative to the total weight of the composition;

wherein the weight ratio of the negatively charged amino acids or derivatives thereof to the positively charged amino acids or derivatives thereof is about 1:1; and

wherein the composition is in the form of an emulsion.

2. The composition of claim 1 , wherein:

the at least one negatively charged amino acid or derivative thereof is chosen from glutamic acid, aspartic acid, derivatives thereof, or mixtures thereof; and

the at least one positively charged amino acid or derivative thereof is chosen from arginine, lysine, histidine, ornithine, derivatives thereof, or mixtures thereof.

3. The composition of claim 1 , wherein:

the at least one negatively charged amino acid or derivative thereof is present in an amount ranging from about 2% to about 10% by weight, relative to the total weight of the composition; and

the at least one positively charged amino acid or derivative thereof is present in an amount ranging from about 2% to about 10% by weight, relative to the total weight of the composition.

4. The composition of claim 1 , wherein the at least one silicone copolymer is chosen from dimethicone, dimethicone copolymers, amino functional silicones, or mixtures thereof.

5. The composition of claim 1 , wherein the at least one silicone copolymer is present in an amount ranging from about 0.1% to about 10% by weight, relative to the total weight of the composition.

6. The composition of claim 1 , wherein the at least one nonionic emulsifier is chosen from polysorbates.

7. The composition of claim 1 , wherein the at least one nonionic emulsifier is present in an amount ranging from about 0.01% to about 5% by weight, relative to the total weight of the composition.

8. The composition of claim 1 , further comprising at least one conditioning agent.

9. The composition of claim 8 , wherein the at least one conditioning agent is present in an amount ranging from about 0.01% to about 15% by weight, based on the total weight of the composition.

10. The composition of claim 1 , further comprising at least one fatty compound.

11. The composition of claim 10 , wherein the at least one fatty compound is chosen from fatty alcohols, fatty acids, fatty alcohol derivatives, fatty acid derivatives, or mixtures thereof.

12. A method of treating or caring for keratin fibers, comprising:

(1) applying to the keratin fibers a composition comprising:

(a) at least one negatively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(b) at least one positively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(c) at least one silicone copolymer; and

(d) at least one nonionic emulsifier;

wherein all amounts are relative to the total weight of the composition;

wherein the weight ratio of the negatively charged amino acids or derivatives thereof to the positively charged amino acids or derivatives thereof is about 1:1:

and

(2) optionally rinsing the composition from the keratin fibers.

13. The method of claim 12 , wherein:

the at least one negatively charged amino acid or derivative is chosen from glutamic acid, aspartic acid, derivatives thereof, or mixtures thereof;

the at least one positively charged amino acid or derivative is chosen from arginine, lysine, histidine, ornithine, derivatives thereof, or mixtures thereof;

the at least one silicone copolymer is chosen from dimethicone, dimethicone copolymers, amino functional silicones, or mixtures thereof; and

the at least one nonionic emulsifier is chosen from polysorbates.

14. A packaging system comprising a container containing a composition for treating keratin fibers, the composition being in the form of an emulsion and comprising:

(a) at least one negatively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(b) at least one positively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(c) at least one silicone copolymer; and

(d) at least one nonionic emulsifier;

wherein all amounts are relative to the total weight of the composition; and

wherein the weight ratio of the negatively charged amino acids or derivatives thereof to the positively charged amino acids or derivatives thereof is about 1:1.

15. The packaging system of claim 14 , wherein the container is chosen from an ampoule, a syringe, a tube, a packet, a pouch, or a bottle.

16. A kit comprising:

a first container comprising a first composition for treating keratin fibers, the first composition being in the form of an emulsion and comprising:

(a) at least one negatively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(b) at least one positively charged amino acid or a derivative thereof in an amount of at least about 1% by weight;

(c) at least one silicone copolymer; and

(d) at least one nonionic emulsifier;

wherein all amounts are relative to the total weight of the composition; and

wherein the weight ratio of the negatively charged amino acids or derivatives thereof to the positively charged amino acids or derivatives thereof is about 1:1.

17. The kit of claim 16 , wherein the first container is chosen from an ampoule, a syringe, a tube, a packet, a pouch, or a bottle.

18. The kit of claim 16 , further comprising a second container configured to apply the composition to keratin fibers.