The gel marks left by medical tape are mainly the gel left by the patient after applying medical tape. This kind of gel has certain fat solubility, if the gel marks can’t be washed off with water, you can use vegetable oil or edible oil to apply it directly, wait for it to dissolve and then use soap to wash it. If the patient has a certain allergic reaction while using medical adhesive tape, try to use allergic creams for topical treatment, for example, hydrocortisone butyrate cream can be applied topically. If it is accompanied by significant itching, oral antihistamines, such as oral loratadine, can be taken.