Hi again! According to Handprint’s info: “Aniline black PBk1 is an impermanent azine pigment, available from about 6 pigment manufacturers worldwide. Holbein peach black, the only commercial source, contains the pigment in mixture with carbon black, which must be the dominant ingredient as the paint is quite lightfast; it produces subtle and active textural effects wet in wet, and has the darkest masstone value of any black paint. Because of the azine pigment, this paint should perhaps not be used in tints or diluted.”

There’s a new version which contains only pk1, but it’s labelled as permanent, anybody has experience with this color and it’s permanence?

Thanks in advance!