You can eat soy sauce anytime after a burn and it has no effect. The color of the skin is due to pigmentation, eating soy sauce does not lead to localized pigmentation affecting aesthetics. Eating soy sauce after a burn will not affect the prognosis of the wound, the pigmentation of the skin is mainly affected by the melanocytes, eating something more heavily pigmented will not affect the wound. Burns need active care to have a better recovery. Try to eat a light diet, avoid spicy stimulation, do a good job of protecting the wound, avoid touching water, regular disinfection, keep local clean. Burns need to be standardized care of the wound, if there are local symptoms of infection need to consult a doctor in time, under the guidance of the doctor for standardized treatment, a reasonable diet, to ensure that the prognosis is good.