It can take 4 to 6 weeks for acne to completely go away, as stated by WebMD. Drugstore acne treatments can help speed the healing process, and some products work to take away a pimple's redness, making it less noticeable.
If drugstore remedies don't help an individual's acne, the Mayo Clinic recommends a visit to the dermatologist. He or she can offer prescription creams and pills to help treat the cause of the acne. For example, women may be prescribed birth control pills to help control fluctuating hormone levels that contribute to acne.
Antibiotics are used to kill bacteria and relieve redness and irritation. Prescription regimens can take 6 to 8 weeks to be effective, and it is not uncommon for the acne to get worse before it gets better.