Iodophor marks on the skin can be washed off with water, alcohol or washed several times with cleanser.
Povidone-iodine is a very widespread disinfectant, mainly formed by the complexation of simple iodine and some surfactants, does not contain alcohol, the external application of the skin has a temporary yellow staining, which can be volatilized, and generally do not need special treatment. Prolonged use of skin color will be darker, but not hyperpigmentation, can be washed off by water, alcohol wipe.
Povidone-iodine is easily soluble in organic solvents, alcohol is a relatively safe organic solvent, if the person is allergic to alcohol, then you can try other organic solvents, or you can use a cleanser to wash a few more times.
If you want to go to the iodophor mark, you should go to a regular hospital, by the doctor to guide the treatment, do not unauthorized treatment, so as not to cause adverse consequences.