Neck scars after thyroid cancer surgery usually cannot be removed naturally, and the formed scars will persist for a long time, which can be reduced by using scar removal medication during the scar formation period. Traditional open thyroid cancer surgery involves making a transverse incision of about 4 to 5 cm in length in the skin at the thyroid gland in the neck, through which the internal thyroid tissue is then surgically treated. After surgery, the incised tissue is sutured layer by layer, with the last layer being the skin. When the skin is damaged to the dermis and subcutaneous tissues, the wound will be repaired by new connective tissue proliferation and form a raised, smooth surface, irregularly shaped, dark red, slightly hard patch called a scar. Since the surgical incision has damaged the dermal layer of the skin, scars will definitely form and cannot be faded or removed naturally. When scarring occurs after thyroid surgery, it is recommended to seek medical attention. Under the guidance of a professional doctor, the use of scar-removing dressings, such as scar patches, and compression bandages during the scar formation stage can lighten the scars and inhibit the formation of hyperplastic scars.