Retin A and Murad Vitamin C cleanser?

My routine used to be proactiv everyday. I recently started using retin a 0.1 cream and I think proactiv is too harsh to mix with this. My main concern is acne and post acne marks so I decided to buy Murad's Vitamin-C cleanser to use at night so I do not mix the proactiv and the retin a. Are these two ok together? I've read that retin a and Vit C shouldn't mix. Should I use the proactiv at night and murad in the morning? Or would it be bad to use more than one cleanser plus retin a. Thanks!!

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