Abstract:
Process for improving and modifying the properties of living human hair which comprises subjecting the hair to stretching by mechanical deformation, and converting from 10 to 50% of the cystine in the hair to lanthionine. The conversion is accomplished in an aqueous medium with an alkaline composition.
Abstract:
A HAIR DYE COMPOSITION COMPRISING A SOLUTION HAVING A PH OF 3 TO 10 CONTAINING AN EFFECTIVE AMOUNT OF A HAIR DYE SELECTED FROM THE GROUP HAVING THE FORMULAF IN WHICH N IS 1 TO 4 AND THE METHOD OF DYENG HAIR WITH THIS COMPOSITION.
Abstract:
A GROUP OF COUPLING AGENTS, OF WHICH THE FOLLOWING ARE REPRESENTATIVE: 3-DIMETHYLAMINO-PHENYLUREA, 3-DIMETHYLAMINO-PHENYLTHIOUREA, (3-HYDROXY-6-METHOXY)-PHENYLUREA, (3-HYDROXY-6-METHOXY)-PHENYLTHIOUREA, (2,4-DEI METHYL-3-HYDROXY-PHENYLUREA, (2,4-DIMETHYL-3-HYDROXY)-PHENYLTHIOUREA, AND (4-METHYL-3-HYDROXY)PHENYLTHIOUREA. THE INVENTION ALSO INCLUDES THESE COUPLERS IN ASSOCIATION WITH OXIDATION DYES, AND A METHOD OF DYEING HAIR USING SAID COMPOSITIONS.
Abstract:
Compounds suitable for use in one step hair and keratin fiber dyeing compositions which do not require the use of separate dye modifiers and are exceptionally color stable, having the formula
IN WHICH R is selected from the group consisting of hydrogen and alkyll R1 is selected from the group consisting of alkyl, alkoxy, and dialkylamino, R4 which can be in position 5 or 6 on the ring is selected from the group consisting of hydrogen, halogen, hydroxy, alkyl, alkoxy and NH2, and at least one of said R1 and R4 is said dialkylamino or said NH2.