In the case of dyeing knitted polyester fabrics, the problem of uneven dyeing may be solved by adding "auxiliary-P", an emulsified solution containing methyl naphthalene.

Dyeing assistant RG, a cationic compound, has at least two reactive groups which are sensitive to active hydrogen.

Dyeing auxiliaries of active dyestuff Sodium alginate is used as active dyestuff in printing and dyeing industry that is better than foodstuff amylum and other plasm.