2-Methyl-5-N-hydroxyalkylaminophenol in an oxidation dye composition and method of using the same

A process for dyeing human hair comprising initially applying to the hair an effective amount of a solution of a coupler having the formula ##STR12## wherein R is hydroxyalkyl containing 1-4 carbon atoms, said coupler being present in an amount of 0.01 to 2.5 weight percent of said solution and then applying to the thus treated hair an effective amount of a solution of an oxidation base wherein said oxidation base is present in an amount of 0.01 to 3.5 weight percent of said solution on an oxidizing agent free basis and an effective amount of an oxidizing agent.

A process for dyeing human hair comprising initially applying to the hair an effective amount of a solution of an oxidation base wherein said oxidation base is present in an amount of 0.01 to 3.5 weight percent of said solution and then applying to the thus treated hair an effective amount of a solution of a coupler having the formula ##STR13## wherein R is hydroxyalkyl containing 1-4 carbon atoms, said coupler being present in an amount of 0.01 to 2.5 weight percent of said solution on an oxidizing agent-free basis and an effective amount of an oxidizing agent.

A process for dyeing human hair comprising initially applying to the hair an effective amount of a solution of a coupler having the formula ##STR14## wherein R is hydroxyalkyl containing 1-4 carbon atoms, said coupler being present in an amount of 0.01 to 2.5 weight percent of said solution, then applying to the thus treated hair an effective amount of a solution of at least one oxidation base, said oxidation base being present in an amount of 0.01 to 3.5 weight percent of said solution, and finally applying to the hair an effective amount of an oxidizing agent.

A process for dyeing human hair comprising initially applying to the hair an effective amount of a solution of at least one oxidation base wherein said oxidation base is present in an amount of 0.01 to 3.5 weight percent of said solution, then applying to the thus treated hair an effective amount of a solution of a coupler having the formula ##STR15## wherein R is hydroxyalkyl containing 1-4 carbon atoms, said coupler being present in an amount of 0.01 to 2.5 weight percent of said solution, and finally applying to the hair an effective amount of an oxidizing agent.

A dye composition for keratinic fibers containing an aqueous or hydroalcoholic carrier, at least one coupler of the formula ##STR16## wherein R represents hydroxyalkyl having 1-4 carbon atoms and at least one oxidation base selected from the group consisting of a paraphenylene diamine, an orthophenylene diamine, a paraamino phenol, an ortho amino phenol and a heterocyclic oxidation base, each of said coupler and the said base being present in a hair dyeing effective amount.

A dye composition for human hair containing an aqueous or hydroalcoholic carrier, at least one coupler of the formula ##STR17## wherein R represents hydroxyalkyl having 1-4 carbon atoms and at least one oxidation base selected from the group consisting of an oxidation base having the formula ##STR18## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently are selected from the group consisting of hydrogen, alkyl having 1-4 carbon atoms, halogen and alkoxy having 1-4 carbon atoms;

• Y represents OH or ##STR19## wherein R.sub.5 and R.sub.6 each independently represent a member selected from the group consisting of hydrogen, alkyl, hydroxyalkyl, carbamylalkyl, mesylaminoalkyl, aminoalkyl, acylaminoalkyl, sulfoalkyl, morpholinoalkyl, piperidinoalkyl, monoalkylaminoalkyl, dialkylaminoalkyl, arylsulfonamidoalkyl and carboxyalkyl wherein each of the alkyl moieties contains from 1-4 carbon atoms, and an oxidation base having a heterocyclic nucleus carrying in para position either two amino groups or an amino group and a hydroxyl group, said oxidation base being in the free base form or in the form of an acid addition salt selected from the group consisting of hydrochloride, hydrobromide and sulfate, each of the said coupler and the said base being present in a hair dyeing effective amount.