Bentonite clay won't cure real acne, although it can help clear out pores and dry the skin. And aspirin is not salicylic acid. It's acetylsalicylic acid...a derivative of salicylic acid, and it doesn't work the same and it doesn't work on acne.
Acne is caused by bacteria and oily skin that is defective in it's ability to exfoliate itself. You can control mild acne with OTC treatments, but real acne, acne vulgaris, is best treated by a doctor, and even then, it's notoriously and ridiculously difficult to cure.