The precautions to be taken after lip bleaching generally include the following points: eat a light diet, avoid water, keep the lips clean, and avoid tearing the scabs. 1. Light diet: patients should try to eat a light diet after lip bleaching, avoid spicy and stimulating food, in order to prevent stimulation of the wound induced infection. 2. Avoid water: patients should avoid water for 3 days after lip bleaching to prevent infection. 3. Keep lips clean: If there is oozing on the lips after lip bleaching, it is recommended to use sterile cotton pads or gauze to wipe it clean. 4. Avoid tearing the scabs: When the scabs appear on the lips after lip bleaching, avoid tearing them with your hands to prevent uneven pigmentation on the lips. When the patient bleaching lips after the discomfort symptoms, it is recommended to go to the regular hospital in a timely manner, under the guidance of a professional doctor standardized treatment.