Sharkne features a key ingredient called Alpha hydroxy Acids (AHA) in most of their products. While many users report clearer skin after several months of use, some have found little to no success. No doubt AHA use has shown some impressive results in clinical studies, but it is still a dangerous chemical (it IS an acid after all). FDA has even announced that the use of AHA may increase sensitivity to sunlight, especially harmful UV rays that cause skin cancer. Check our list below for the 5 Best Acne Treatments!