:? I have been using differin gel and doryx for about a month now. I started to see results after about one week, then I ran out of the doryx(dermatologist gave me a week sample of the doryx). Well as soon as I stopped the doryx my face began to break out even more. So ofcourse I filled my perscription for the dorxy($60 with ins.) and still not much improvement one week later. I am washing my face with neutrogena acne face wash with salicylic acid. Is this to harsh of a face wash to use with the differin? And how long does it take to see improvement using the differin and doryx?