Patent ID: 6758867
Filing Date: 2004-07-06
Classification: A61K,A61Q

Abstract:
A method for permanently dyeing hair which comprises subjecting said hair to a number of treatments, having a set time interval between each two consecutive such treatments, wherein each treatment comprises:a.) contacting said hair for a period of about 5 seconds to about 2 minutes with a recently made mixture of: part ai: oxidative dye intermediates in a shampoo base at alkaline pH; and wherein part ai optionally has about 0.01 to about 5% of a conditioning agent and optionally has about 0.01 to about 10% of a structurant; part aii: an oxidative compound in a shampoo base at acidic pH and wherein part aii optionally has about 0.01 to about 5% of a conditioning agent; and optionally has about 0.01 to about 10% of a structurant; with the proviso that at least one of part ai and part aii has about 0.01 to about 5% of a conditioning agent; and at least one of part ai and part aii optionally has about 0.01 to about 10% of a structurant b.) rinsing said mixture from said hair with water; and wherein said number of treatments with an identically formulated mixture is at least 6 or more; and wherein said set time interval between each two consecutive treatments is between about 8 hours and 30 days.