“What is the best acne treatment?”

Acne is a common skin condition involving blockage and inflammation of hair follicles. Acne can be summarized as an interplay of the following four factors: (1) plugging of the follicle, (2) excess sebum production, (3) the presence and activity of bacteria, Propionibacterium acnes, and (4) inflammation. The strongest and most effective treatment is isotretinoin.
http://davidroblesmd.blogspot.com/2016/10/acne-everything-you-need-to-know-by.html
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Good question. Treatment of acne depends in large measure on the severity of your condition. Treatments available without prescription include benzoyl peroxide and Differin gel. If these are not helping, the next step would be a visit to your dermatologist since acne is unsightly and, if severe, can leave scars. 

Steve Schleicher