Those are matte pigments, you shouldn't be using alcohol to press them because it will ruin the pigment (as you experienced). You need to get a pigment pressing solution that is appropriate for matte pigments because matte shades don't have the same binders as non-matte shades. I know they exist but I've never heard of anyone having much luck with matte shadow pressing mediums. I personally don't even press my matte pigments.