PH value of sliding agent in mercerized wool and nylon acid dyes, reactive dyes, mordant dyes or metal complex dyes for dyeing, dye bath can aptitude acidic PH value from sliding.

The results showed that the dyeing brightening agent can brighten and deepen direct and acid dyes, but it has no effect on metal complex dyes and its brightening effect disappears after being baked.

Acid and metal complex dyes are normally applied to polyamide using temperature controlled methods.