The use of this darkening agent RG-905 can give fabrics, non-woven fabrics, and various fibers a soft and silky touch, and achieve the effect of brightening without causing uneven color.

RG-905 is a special processing aid that enhances vivid color and washes fastness. Suitable for polyester (Polyester), rayon (Rayon), wool (Wood) and silk (Silk) yarns, etc.

In ordinary black dyeing, even if a large amount of dye is used, the dyeing effect cannot be achieved, but adding RG-905 can achieve a 40~150% thick color effect without affecting the fastness. Also suitable for yarn surfaces where the dye particles are not fully dispersed.