Why doesn’t closed acne get better after receiving fruit acid treatment? For those of us who have some knowledge of acne, we know that fruit acids are an effective treatment for closed acne, but they are not effective for all acne sufferers. I think it is difficult to pin all our hopes on fruit acids when we have closed acne on our face. Since this is the first time many people have heard of fruit acids, let me first explain to you what they are. Fruit acids, as the name suggests, are organic acids extracted from fruits, an active ingredient present in a variety of natural fruits, as most of them are extracted from fruits, so called fruit acids. Fruit acids were discovered in the 1970s by Dr. Scott and Dr. Ruijin Yu, a Chinese-American physician. Today, fruit acids are an essential part of dermatologists’ complementary treatments. However, I find it very difficult to use fruit acids alone in the treatment of acne. As mentioned above, fruit acids are an adjunctive treatment, and each treatment has its limitations. If the treatment is not effective, it is important to consider whether the treatment is carried out by a professional body and whether the acid used is an effective one. Because of the strict storage requirements of fruit acids, they are very volatile. Secondly, the doctor who gave the fruit acid treatment to the patient, when choosing the concentration of the fruit acid and the reaction time of the fruit acid on the face, did he or she master these two points well. If these two points are not well mastered, the fruit acid will still not have a very good therapeutic effect.