Injection of whitening needle can improve the dark yellow skin of the whole body, which generally takes 1-2 courses of treatment. It is recommended that you inject in a regular medical institution, and the dark yellow face can be improved simultaneously with laser. The main component of whitening needle is antioxidant, which helps the body to detoxify, resist cell oxidation and reduce the formation of melanin. It is harmless to human body, and the general effect can last for about 1-2 years. Whitening needle is generally divided into long course and short course. The basic ten needles 16800 yuan for a long course of treatment, and about 8800 yuan for five needles for a short course of treatment. The specific price depends on the hospital, and the price of each region and hospital is different. I suggest you go to the hospital for specific consultation.