Cosmetic pigment coating and method of application in nail polish

A method of preparing a coated pigment material to improve the suspensibility of said pigment material in a nail enamel suspension, said nail enamel suspension having improved stability as a result of said pretreatment, said method comprising pre-treating pigment material, prior to grinding, in the following steps:

• a) forming a coating mix by mixing uncoated pigment material with from 0.25 to 20 weight % based on said pigment material of a hydrophobic pigment coating mixture and with from one-third to ten times the weight of said pigment material of an organic hydrophobic pigment paste solvent, said hydrophobic pigment coating mixture comprising:
• i) one part of a hydrophobic carboxylic acid having from 3 to 18 carbon atoms;
• ii) from 0.1 to 10 parts by weight of a non-toxic carboxylic acid metal salt also having from 3 to 18 carbon atoms;
• and
• iii) from 0.5 to 10.0 parts based on the combined weight of said acid and said acid salt of a pigment-coating carrier resin;
• and
• b) aging said coating mix for from about 5 to about 30 hours, being time sufficient to coat said pigment material with said hydrophobic pigment coating mixture and provide good stability of a nail enamel suspension incorporating said coated pigment material.