Lip bleaching and lip tattooing are both new ways of lip beauty nowadays, but they are suitable for different people. Lip bleaching is mainly for people with darker lips or color difference between upper and lower lips, and can bleach the lips into a more natural pink color. If the congenital lip color is not ideal, the lip peak is not obvious, the lip edge is seriously defective, or the lip color is not ideal due to heart disease, anemia and other diseases, all can take the way of lip bleaching to improve. Lip tattooing, on the other hand, mainly improves the line or appearance of the lips rather than the color of the lips. However, each of these two types of lip cosmetic methods has its own hazards, as follows: 1. Lip bleaching: suitable colors need to be formulated according to the age, skin tone and lip color of the applicant, if the age or lip color is relatively light, large red, deep red or vermilion can be used, older or darker lips, it is appropriate to use light red, such as poor color formulation, which can lead to lips with pig liver color; 2. Lip tattooing: adverse reactions mainly have lips Swelling and lip color darkening, related to the use of anesthetic in the process of lip tattooing, which caused some stimulation to the lip mucosa. Regarding lip bleaching and lip tattooing, candidates need to consult in regular institutions and choose the most suitable way according to their own situation, rather than blindly following the trend, which may result in adverse consequences.