Welcome Guest to Happi

Subscribe Free: Magazine | eNewsletter

current issue February 2015
 •  SC Johnson Buys HomeBrands A.S.  •  Fewer Women Shopped for Beauty in '14  •  Unilever To Buy REN Skincare  •  Dr. Bronner's Adds Toothpaste  •  Chemical M&A Activity Rises
Print

Unilever Patents Gradual Hair Dyeing Process



Published November 15, 2005
Related Searches: treatment hair water patent
Post a comment
Patent No. US 6,736,860 B2: Unilever HPC, Chicago, IL, was awarded a patents for a method to permanently dyeing hair that comprises subjecting the hair to a number of treatments and rinses, with a set time interval between each two consecutive treatments. The treatment comprises a mixture of dye intermediates in water and fatty alcohol at alkaline pH and an oxidizing compound in water and fatty alcohol with an acidic pH.


blog comments powered by Disqus