Method and composition for dyeing human hair

• US 4,381,920 A
• Filed: 08/20/1981
• Issued: 05/03/1983
• Est. Priority Date: 08/03/1979
• Status: Expired due to Fees

• Current Assignee: Michael-David Laboratories A Partnership Consisting of Michael Ponser and David Garlen
• Original Assignee: Michael-David Laboratories
• Inventors: Garlen, David
• Primary Examiner(s): Ore, Dale R.
• Application Number:
  US06/294,569
• Time in Patent Office: 621 Days
• Field of Search: 8/405, 8/406, 8/407
• US Class Current: 8/406
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61K 8/062 Oil-in-water emulsions
• CPC Class Codes: A61K 8/347 Phenols
• CPC Class Codes: A61K 8/411 Aromatic amines, i.e. where the amino group is directly linked to the aromatic nucleus
• CPC Class Codes: A61K 8/415 Aminophenols
• CPC Class Codes: A61Q 5/10 Preparations for permanently dyeing the hair

Abstract

Keratinous materials, such as human hair, can be colored stepwise in gradual increments at ambient temperatures with formulations of selected oxidation hair dye intermediates with an oxidizing agent at pH in the range from 7.0 to 8.3 in a white relatively odorless cream vehicle. Sequential application of the cream vehicle formulations, rinsed after a period of time, followed by application of an oxidizing agent, do not stain or color the skin, can be easily applied to the hair and color the hair slowly in steps over a period of weeks, resulting in a gradual color change to any desired shade from light brown to black.

Claims

1. A method of dyeing human hair which comprises the steps of:

(1) application to the hair of a hair color formulation comprising;

(a) an oil-in-water emulsion of 5 to 20 parts by weight of oil in 80 to 95 parts by weight of water;

(b) p-phenylenediamine at a concentration of about 0.5% to about 1.5% of the weight of the oil-in-water emulsion;

(c) 4-chlororesorcinol as a dye color modifier, in quantity equal to 10% to 50% of the weight of the p-phenylenediamine;

(d) an inert white pigment suspended in the emulsion at a concentration of about 0.2% to about 1% of the weight of the total formulation; and

(e) an antioxidant in quantity sufficient to prevent premature oxidation of the p-phenylenediamine oxidation dye intermediate when packaged out of contact with air;

(f) the total quantity of oxidation dye intermediates being not greater than 1.5% of the total weight of the formulation and

(g) the pH of said formulation being between 7.0 and 8.3,

(2) allowing said formulation to remain on the hair for 15-30 minutes,

(3) rinsing off the excess, and

(4) application of an excess of dilute hydrogen peroxide which is allowed to remain on the hair for 5-15 minutes and then rinsed off.