? More and more star idols will talk about the magical effect of whitening needle. After media publicity, this beauty project will become more and more exciting. About whitening injection, some friends will be confused by a question, that is, since the effect of whitening injection cannot be preserved forever, how long will it take to do the second injection? According to experts from Wenzhou Mei Jia Plastic Surgery Hospital, the main component of whitening needle is glutathione GSH, which is a small peptide compound widely existing in human cells and consists of glutamic acid, cysteine and glycine. It is involved in the regulation of intracellular amino acid transport, glucose metabolism and DNA synthesis, and plays an important role in antagonizing exogenous poisons and oxygen damage, regulating immune function, maintaining protein structure and function of cells, and apoptosis. Over the years, people have tried to evaluate the damage of oxygen-based lipid peroxidation according to the degree of GSH redox, and made important progress. Many friends will consider how long the second injection will take after seeing the effect of whitening injection. It is very serious to repeatedly hit the body, so you must consider your health when you are in beauty. Generally speaking, it is recommended to inject once every three months. The effect of whitening needle is not permanent, it can only last 1-2 years. Therefore, the whitening needle must insist on playing. Ten times is a course of treatment. After one course of treatment, if a second course of treatment is needed, it needs to be carried out five days later. Course of treatment: Usually, the duration of one application is 40 to 60 minutes. Generally speaking, different people have different times of treatment, and the frequency of using whitening needles is also different. Whitening with whitening needle has no special side effects, and long-term treatment will never hurt liver and kidney unless it is allergic to drugs. ? Because most whitening injections are intravenous injections, female friends, please remember to accept injections under the supervision of doctors, so as not to bury potential safety hazards and harm your own interests.