Before answering this question, let me first introduce you to the “hydrafacial needle”. The water light needle is to use the water light needle instrument and disposable needle, to your skin 1-2 mm (mesoderm) input nutrients, you can adjust the depth of injection, injection dose, so that the skin more hydrated, shiny, plump, wrinkle removal such role. The amount of water light injection in the market, through the state approved water light kit single injection dose is 2.5ml, mainly small molecules of hyaluronic acid, mainly, want to whitening or want to remove wrinkles, you can add some other drugs, such as this vitamin C, Botox, but the single injection dose, not recommended more than 3ml. Why? Because overdose injection will leave too many pinholes on the epidermis, one may prolong the repair time and trigger skin discoloration. There is also excessive damage to the epidermis, which may destroy the epidermal barrier and cause problems such as thinning of the epidermis and skin sensitivity. The actual fact is that you can find a lot of people who have been in the marketplace for a long time, and they’ve got a lot of people who have been in the marketplace for a long time. The effect is not immediately visible after the hydration injection. We all know that the main component of the hydration needle is hyaluronic acid (hyaluronic acid), when hyaluronic acid into your skin, it needs to have a process of absorbing water, so after the hydration needle 3, 4 days after the skin will have anti-dry, anti-black phenomenon, this is normal. It takes about a week for the effects of hydrafacial injection to show up – facial hydration, reduction of fine lines and other phenomena. In addition, the effect of hydrafacial injection has an expiration date, and this can be seen from its main ingredients. People with different skin conditions have different effects after hydrafacial injections. For example: the land that is so dry that it cracks and the land by the water, the same is poured a bucket of water, the result can be imagined. Therefore, there are differences in the interval and number of injections of hydrafacial needles, and you need to communicate well with your doctor. The ingredients of the water light needle are relatively safe, but there will be some side effects: 1, there are needles of water light, in the injection may produce pain, especially the ingredients inside plus some vitamin C. 2, some seekers are easy to pop acne after doing.