The ointment to lighten the scars include compound heparin sodium allantoin gel, polysulfonic acid mucopolysaccharide cream, and cummin cream ointment. 1. Compound heparin sodium allantoin gel: dermatology topical drugs. It is mainly used for the treatment of hyperplastic keloid and keloid; scar secondary to surgery, amputation, burns and other accidents that limit the activities and affect the aesthetic appearance of the scar; contracture scar, and so on. Common adverse reactions to the use of this product include itching, rash, hyperpigmentation, and herpes. It is prohibited for those who are allergic to the active ingredient of this product, onion extract, sodium heparin or allantoin, as well as any other excipient ingredients contained in this product. 2. Mucopolysaccharide polysulfate cream: fibrinolytic drug. It is mainly used for superficial phlebitis, varicose phlebitis, adjuvant treatment of varicose veins after surgery and sclerotherapy, hematoma, contusion, swelling and edema; thrombophlebitis, exudation caused by intravenous fluids and injections; inhibition of scar formation and softening of scars. Hypersensitivity to any of the components of the product, as well as heparin allergy, bleeding-prone individuals, and patients with known heparin-induced thrombocytopenia are contraindicated. Open wounds, broken skin and mucous membranes are prohibited. 3. Cumexoside Cream Ointment: It is a proprietary Chinese medicine with the efficacy of promoting wound healing. It is used for the treatment of trauma, surgical wounds, burns, scars and scleroderma. It is prohibited for those who are allergic to this product. It should not be used before wound healing. It should be used under the guidance of a doctor, choose the right medicine for the condition and follow the doctor’s instructions.