Scar proliferation after washing tattoo generally refers to hyperplastic scar, patients can follow the doctor’s instructions through medication, surgical treatment, other treatments and other ways to improve, but can not be completely removed. 1. Medication: Usually, patients can follow the doctor’s instructions to use onion extract preparations, silicone gel ointment, silicone gel patches and other silicone preparations for treatment. If the effect of external medication is not satisfactory, it can be treated by injection of glucocorticoid or 5-fluorouracil, and injection of bleomycin, mitomycin C and other drugs as prescribed by the doctor. 2. Surgery: It is suitable for those who have unsatisfactory effect of drug treatment and serious condition, and the common clinical surgical methods include keloid spasm release, free skin grafting, skin flap grafting and so on. 3. Other treatments: common ways are hypoallergenic paper tape, laser therapy, cryotherapy, radiation therapy, micro-needle therapy, etc. Usually it is difficult to remove the scar once formed after washing tattoo, but the condition can be controlled and the symptoms can be reduced through treatment. It is recommended that patients follow the doctor’s instructions for treatment, and should not use drugs or prescriptions indiscriminately.