Assertion: black coloring material | /r/HasAspect | low color value
Facets:
value: very
type: DEGREE
Source sentences:
text: The amount of naphthoquinone derivative used is at least 1% by weight, preferably at least 5% by weight, relative to the material to be stained, but an amount of less than 1% by weight can be used by repeating the staining process to obtain a black coloring material having a low color value, or a fiber stained to a low color value.
text: The objects of the present invention are to overcome the above-mentioned drawbacks of conventional black coloring materials, and to provide a safe black coloring material having a good fastness and a very low color value, and cosmetics comprising this black coloring material.