Clairol Incorporated

Bristol-myers Squibb Compnay

Henkel Kommanditgesellschaft Auf Aktien

Leszek J Wolfram

Giuseppe Prota

Keith C Brown

Gottfried Wenke

Thomas M Schultz

David Cohen

Bryan Patrick Murphy

Alexander C Chan

Norman P Loveless

Linda Albrecht

Yuh-Guo Pan

Horst Hoeffkes

David Rose

Detlef Hollenberg

Janusz Z Jachowicz

Joseph J Varco

Michael Y Wong

Frank Naumann

Alice A Mayer

Norman N Tehrani

Herman Bogaty

Richard De Marco

Alexander Chung-Bong-Chan

Joachim-Kurt Foitzik

A hybrid dye is provided that is useful for coloring keratin fibers and skin. The hybrid dye has the structure X-S-Y, where X is derived from a substantive dye, Y is derived from an oxidation dye precursor or a melanin precursor, and S is a direct bond or spacer group. The present invention also provides a composition for coloring keratin fibers that contains the hybrid dye.

Dyes and colorants

The present invention is directed to the preparation of an aqueous hair dyeing composition containing an effective hair dyeing amount--at least 2 mg/ml--5,6-dihydroxyindole (DHI). An aqueous hair dyeing composition is produced by reacting under essentially anaerobic conditions dopa or a salt thereof with an alkali metal ferricyanide oxidant in an aqueous reaction medium to obtain dopachrome, and permitting the dopachrome to undergo rearrangement in the aqueous medium to form 5,6-dihydroxyindole, said rearrangement being conducted in the substantial absence of oxidant, the aqueous medium being buffered by sufficient buffering agent to maintain a pH of from about 4.5 to about 9 for the reaction medium throughout the series of reactions that take place thereafter, removing the ferrocyanide species present in the aqueous system, and lastly, charging the composition into a suitable container.

Process for the manufacture of a hair dye product containing

A process for altering the color of hair that has been dyed with dihydroxyindole comprising the steps of treating the dyed hair with an acidic solution for an effective amount of time and rinsing the treated hair.

Acidic post-treatment of hair dyed with dihydroxyindole

Process for dyeing human hair by the sequential treatment of the hair with a metal ion and particularly transition metal ion containing composition and with a dye composition containing 5,6-dihydroxyindole-2-carboxylic acid.

Process for dyeing hair by the sequential treatment of hair with metal

A process for dyeing hair by preparing and thereafter applying to the hair an aqueous reaction medium comprising dopa and an oxidant, said aqueous reaction medium further containing at least one hair dyeing agent selected from the group consisting of primary intermediates and couplers and also containing a buffer to maintain the pH in the range from 6 to 10 during the reaction, and removing said aqueous reaction medium from the hair within about one hour following its preparation.

Process and kit for dyeing hair

A process for dyeing hair by preparing and thereafter applying to the hair an aqueous reaction medium comprising a substituted dopa species and an oxidant which is a ferricyanide salt, said aqueous reaction medium further containing a buffer to maintain the pH in the range from 6 to 10 during the reaction, and removing said aqueous reaction medium from the hair within about one hour following its preparation.

A process for dyeing hair by preparing and thereafter applying to the hair an aqueous reaction medium comprising dopa and an oxidant selected from ferricyanide and permanganate salts, said aqueous reaction medium further containing a buffer to maintain the pH in the range from 6 to 10 during the reaction, and removing said aqueous reaction medium from the hair within about one hour following its preparation

A hair dyeing process which comprises of steps of contacting the hair to be dyed with an aqueous solution of a metal salt that promotes melanogenses in air. Before or after the aforementioned step contacting the hair with a solution of 5,6-dihydroxyindole, rinsing the hair between the two contacting steps, maintaining the contact with the second-used solution until a desired darker color is obtained, rinsing or shampooing the hair, then contacting the hair with a solution of hydrogen peroxide until the desired color shade is obtained, and then again rinsing the hair.

Hair dyeing process and compositons package

A process for simultaneously cold waving and coloring hair in which the neutralization of the hair waving composition is accomplished in two stages, the second stage of which involves the use of a neutralizing composition containing a hair dye.

Process for simultaneously waving and coloring hair

The invention provides compositions and methods for oxidative hair dyeing utilizing a chlorite salt as the oxidizing agent.

Chlorites as oxidants in hair coloring

A composition for coloring skin comprising a carrier containing an alcohol component consisting of an aromatic alcohol, an aliphatic alcohol or mixtures thereof and certain certified acid dyes, said composition having an acid pH equal to or less than 4.

Composition for coloring skin and method

A process for coloring and/or conditioning hair using modified primary intermediates and/or a modified coupler containing a hydrophobic group or a group containing a cationic site amenable to reaction with an anionic surfactant; novel modified primary intermediates and modified couplers also being disclosed as well as novel synthetic methods for making these compounds.

Processes for coloring and/or conditioning hair

The present invention relates to a method of imparting a controlled tanning of skin by treating the skin with an aqueous medium containing melanin or a precursor of melanin.

Skin tanning composition and method

A process and composition for dyeing hair involving the precipitation of an anionic polymeric dye by means of a cationic polymer preferably in the presence of a surfactant and particularly an amphoteric surfactant.

Process and composition for dyeing hair utilizing an anionic

A process for coloring hair in which a functional metal ion and aminoalkyl or aminohydroxyalkyl catechols are used in combination or applied sequentially to dye the hair rapidly.

Growing community of inventors

Stamford, CT, United States of America

Leszek J Wolfram