COMPOSITION FOR COLOURING WITH ACID pH INCLUDING 2,3-DIAMINO-6,7-DIHYDRO-1H, 5H-PIRAZOLO[1,2-a]PIRAZOL-1-ON, COUPLER, SPECIAL SURFACTANT AND OXIDISER Russian patent published in 2009 - IPC A61K8/41 A61K8/49 A61Q5/10 

FIELD: chemistry.

SUBSTANCE: invention relates to the composition for colouring of the keratic fibers, in particular of the human keratic fibers such as hair. The said composition contains 2,3-diamino-6,7-dihydro-1H, 5H-pirazolo[1,2-a]pirazol-1-on and its additive salts as oxidised base; at least one coupler; at least one surfactant selected from the alkoxylated or glycerated fatty alcohols, anionic sulfate or sulfonate surfactants and amphoteric betain surfactants and at least one oxidiser with pH in the range 5.5-7.5.

EFFECT: invention provides colouring of the keratic fibers with brighter hues of red, copper and mahogany tones which are sufficiently well seen on natural or coloured hair and evenly distributed from hair roots to hair ends.

21 cl, 3 ex