Good evening, but it's all the same if you dissolve it. Acid dyes are water-soluble, partially polar anionic water-soluble metal complex dyes, and basic dyes are water-soluble and partially solvent cationic organic dyes. Their structures usually contain no metal ions, but even if different colors of the same species are dissolved in water, their properties are different ... except for the dissolution rate, they all dissociate into molecular structures in water to form strong hydrogen bonds with water molecules, so they are very easy to disperse. Please refer to as appropriate. Considering the cost of paper coloring, basic dyes are often used, such as basic light yellow O for sacrificial yellow paper and basic fuchsin (basic rose essence, rhodamine B) for dyeing moon red eggs at weddings. Because paper fibers and alumina fillers are mostly anionic surfaces, the color fastness of basic dyes is higher than that of acid dyes through simple physical infiltration, and the addition amount is obviously less than that of acid dyes under the same color difference.