Catalyzed air oxidation haircolor

1. A single component air oxidation hair color composition comprising:

a) water;

b) a catalyst of water soluble metal salt selected from the group consisting of manganese sulfate and manganese chloride and wherein the metal salt content is 0.1 to 1.0%;

c) etidronic acid (1-hydroxyethane-1,1-diphosphonic acid) as a chelating agent and color deposition enhancer;

d) oxidation primary dye intermediates;

e) a compound 1,2,4-Benzenetriol;

f) auxiliary oxidation dye couplers;

g) dye antioxidants and stabilizers;

h) optionally, a water soluble surfactant;

i) optionally, a water soluble anionic polymer;

j) a water soluble solvent system selected from the group consisting of isopropanol and isopropyl acetate, or ethanol and ethyl acetate, wherein the total solvent system content is 0.5 to 10% of the total composition; and

k) an alkalizer.

2. An air oxidation hair color composition as defined in claim 1 where the water content is 70-95% by formula weight.

3. An air oxidation hair color composition as defined in claim 1 where the etidronic acid content is 0.03-0.30%.

4. An air oxidation hair color composition as defined in claim 1 where the oxidation primary dye intermediates content is 0.1-5%.

5. An air oxidation hair color composition as defined in claim 1 where compound 1,2,4-Benzenetriol content is 0.1-3.0%.

6. An air oxidation hair color composition as defined in claim 1 where the auxiliary oxidation dye coupler content is 0.1-3.0%.

7. An air oxidation hair color composition as defined in claim 1 where the dye antioxidant and stabilizer content is 0.1-0.3%.

8. An air oxidation hair color composition as defined in claim 1 where the water soluble surfactants consist of a cosmetically acceptable anionic, amphoteric, or nonionic surfactant where the content is 1-5%.

9. An air oxidation hair color composition as defined in claim 1 where the water soluble anionic polymer content is sufficient to produce a moderately viscous liquid to a gel, at concentrations of 0.5% to 2% total solids.

10. An air oxidation hair color composition as defined in claim 1 where an alkalizer is selected from the group consisting of aminomethyl propanol, triethanolamine, monoethanolamine, ammonia, carbonates, bicarbonates, or other cosmetically acceptable materials, used at a concentration sufficient to the bring the pH range of the composition to 9.0-10.0.