There are some treatments of acne that might not work for you and that’s why I’m writing this post. Some acne is called modular acne and is much stronger than the normal one, for that kind of acne you need special treatments like this one: nodular acne
Beware that you might be using the wrong kind of acne treatment for your problem, read the information in the link above and find out which treatment is the right kind of treatment for you.