In our daily laundry, the dye on clothes may escape with the mechanical agitation of hand washing or washing machine. Where the color concentration is low, the dye will rush to where, so that the light color clothes can easily be dyed with other colors.
Most of the dyestuffs on our clothes are anionic dyestuffs with negative charge, while the anti dyeing towel has been modified in production to become cationic fiber with positive charge. When washing clothes, "anionic dyes" with negative charges fall into the water, they will be quickly snatched away by the "cationic fibers" with positive charges, so as to avoid free dyes from contaminating other clothes.
Moreover, in addition to the role of positive and negative charges, most of the clothing anti dyeing wipes are "microporous non-woven fabric of superfine fiber". Enlarged to see, this kind of cloth structure is honeycomb network, itself adsorption power is strong, can grasp the free dyes in water.
The ability to capture free dyes is achieved by combining the two methods. So basically, there is no chemical effect, it's all physical principles, it won't cause damage to clothing and body, so don't worry.