Abstract: A method for demonstrating the non-drip properties of a hair dye composition comprising the following steps in this order: i. application of a hair dye to a stencil, the stencil being placed over a smooth horizontal substrate; ii. tilting the smooth substrate to an angle elevation from 20 to 60 degrees in relation to a horizontal plane; iii. removal of the stencil from the smooth substrate; iv. visualization of movement of the hair dye composition on the substrate.

Abstract: A kit for colouring hair comprising: i) a first container containing a composition comprising an oxidative dye; and ii) a second container containing a composition comprising a per-oxygen generating material, in which the second container comprises sides of height X mm, a first end closed by a bottom of external diameter Y mm and a second end opposite the first, having a opening of internal diameter Z mm in which the ratio of X to Y is less than 1:1 and the internal diameter Z mm differs by 15% or less from the external diameter Y mm and in which the internal diameter Z mm is from 60 to 80 mm.

Abstract: The present invention relates to a method of hair coloring and bleaching compositions providing a composition comprising i) at least one source of peroxymonocarbonate ions, ii) at least one alkalizing agent, preferably a source of ammonium ions, and iii) at least one radical scavenger, wherein said composition has a pH of up to 9.5, and applying the composition to the hair and retaining on the hair for a period of less than 20 minutes, which provide a high level of lift and lightening and the required dye deposition and grey coverage whilst reducing the concentration of peroxide, the ammonia odor and reducing the hair fiber damage.