Is it ok to switch products?

Question:

OK this is a long story. Before, I've been using Proactiv 3-Step routine (cleanser, toner, and repairing lotion) for my facial acne. Then, my aunt introduced me to Mary Kay skincare, so I started using that, and had great results, but the only problem now is that it makes my face look too shiny, dries it out, and doesn't remove my dead skin cells, unlike Proactiv, which has those beads. I really miss my Proactiv, but I was just wondering if I've been using Mary Kay for 2 months and then I go back to Proactiv, would that be bad for my skin?

Answers:

Alternating between products is much better than sticking with one product for years. Products can stop working for you because your skin gets used to them much like you become immune to medicine or get sick of a certain food if you have to much of it. So no... it would definitely not be bad for your skin at all... probably quite the opposite.

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