The key to whether you need to apply a mask after acid brushing lies in the way you brush your skin, and from a normal perspective, you can use a mask. Acid brushing refers to the use of different concentrations of fruit acids to change the pH of the skin surface, remove the old keratin and promote epidermal cell metabolism, according to the different purposes of the treatment, in the clinic is divided into daily maintenance of acid brushing and medical beauty acid brushing. 1. Daily maintenance acid brushing is mainly through the use of some products containing a low concentration of acid to remove some of the old keratin on the skin surface, after the treatment can be used daily with some of the beauty mask with skin nutrition. 2. Medical Brush Acid, also known as fruit acid peeling, is through the use of some high concentration of fruit acids on the skin surface keratin peeling, after the operation of the local skin may appear swelling, itching and a slight sense of irritation and other uncomfortable symptoms, the use of hyaluronic acid collagen dressings within a week of the treatment of the skin repair has a certain degree of help. Due to individual differences, it is recommended that you consult your physician for specifics.