If the suede is stained with ash or oil, use a dry cloth to wipe off the surface dust, then wipe the surface with a soft cloth. (Be careful not to use too much force, it should be wiped gently (if it can't be wiped off) Try high-grade shoe powder, which is small in size.) Then use a special rubber brush to straighten the hair on the suede in one direction, because the hair of the suede will only make the whole skin even when facing in the same direction. Uniform color.
Finally, the suede retreading agent can be used once or twice a week (in the case of wearing a coat every day). After the above treatment, the retreading agent is evenly sprayed on the suede to dry for one night, and the next day can be worn.