One of the best ways to remove impurities from your body is to go sit in a sauna and sweat it out they say.  So logically speaking, the best way to remove impurities from your face would be to somehow heat it up, steam it, sweat it out.  You can do this by using a hot washcloth or for that matter by steaming your face over a pot of hot water.  In that case, I would suggest putting a towel over your head to prevent it from getting out quite as much and in short to maximize the effect.  Then, follow this with a cold washcloth in order to shrink the pores back up to their normal size or otherwise the smallest size they can be.  My mom has been doing this for years and made us do it as teenagers and so on.  It works.  It definitely keeps acne under control to some degree.  I wouldn’t recommend it to try to completely get rid of acne.  You do have to use other methods and help yourself in so many ways.  The best way would be to get other cleansers, to get a serum if possible, etc.  These will all help you to get the best acne fighting benefits and otherwise get rid of your acne instead of just keeping it at bay or even keep it away rather than just treating the initial problem.