1. Washing method with soap, alkali and water mixture. Put the sweater in the basin and soak it with water. After boiling the soapy water and alkaline water mixture, put the sweater in and soak for ten minutes. When the water becomes warm, rub it gently, and the color will fade naturally.
2. 84 disinfectant cleaning method. 84 disinfectant has decolorization, so it can be used to dispose of dyed clothes, but it can only be used for light-colored sweaters. The detailed operation method is: put the dyed clothes in a basin, pour the prepared disinfectant water (the ratio of water to 84 disinfectant depends on the dyeing part), soak for 15 minutes, and gently rub the dyed area. Use clean water again later.
3. Hydrogen peroxide solution cleaning method. First prepare the hydrogen peroxide and water in a ratio of 1:10, and then put the sweater in and soak it for 5 minutes. Remember that the hydrogen peroxide cannot directly touch the sweater or skin.
4. Salt rubbing method. Wet the dyed area of the clothing, wipe the wet area with large salt pellets or edible salt, and then rub it repeatedly with your hands until the stained color block disappears, and then wash it with water.