In my younger years i suffered a great deal from pimples and acne and I can genuinely say this was the only product strong enough to work. It very quickly dries up pimples and reduces redness, almost instantly. I found it to be quite harsh on my skin, as you can feel it stinging and a slight burning sensation, but as a teenager it was worth the pain to see the results. I used the cream as part of the OXY treatment routine, including the OXY cleansing pads daily to removed the oil and grease off my skin. This product does work very fast and effectively. Effectiveness You can feel it work instantly and almost see the effects instantly also. Ease of Application Easy application and mess free. Convenience Comes in a small tube easy to carry in your purse or bag. Side Effects I didn't experience any side effects in particular, just a stinging on open pimples. Immediacy Works incredibly fast and effectively. You can see visibly improved skin within 24 hours of application for definite.