I Bought 2 face creams. Will they cause irritation.?

My Mom bought Proactiv but it didnt work so well for me so she stopped buying it for me. I still had the repairing lotion bottle left in my cabinent so i leftit go. I boy st.Ives Acne and Blackhead Control. I went home and i wash my face every morning and at night. After i washed my face at night i decided to put the proactiv repairing lotion on right after. With my face completely dry. I was doing this for about 4 days and my face broke out like crazy. So i stopped using the repairing lotion from Proactiv my face has gotted better but its taking its good time. So i went to wal-mart and got this pimple remover with 10% Benzoyl Peroxide. And i wanna know if i could use both St Ives face wash with this or willit break me outeven more like the Proactiv did.(PS: The back of the st ives bottle said do not use any other Asne treatents before or after using this Treatment.)