HAIR COLOURING METHOD Russian patent published in 2024 - IPC A61K8/33 A45D19/00 

FIELD: colouring the hair.

SUBSTANCE: method involves, during the first visit, taking of strands along a horizontal line from the face to the crown of the head on both sides alternately, placing them on the foil, and applying the Matrix Ultra composition and 12% oxide in ratio of 1:2, the rest of the hair from the crown to the occipital region passes in diagonal lines, then 2-4 cm from the hair roots, applying the dye on the foil, then the dye is washed off, during the second visit, if the visit is at least three months later, the technique is performed as in the first visit, if the visit is at most three months later, composition Matrix 508 and oxide 6% in ratio 1:1 or Matrix 510 and 9% oxide are applied in ratio of 1:1 per regrown part of roots with stretching along hair length from root, then the dye is washed off, during the third visit, composition Matrix 508 and 6% oxide are selected at ratio of 1:1, or Matrix 510 and 9% oxide are at ratio of 1:1, the hair is divided into two zones, strands are took alternately on both sides along a horizontal line from the face to the crown of the head, they are placed on foil and the composition Matrix Ultra and 12% oxide are applied at ratio of 1:2, then the dye is washed off.

EFFECT: invention provides colouring without using aggressive chemical compositions with simultaneous reduction of dye application time.

1 cl, 1 ex