Can you use proactiv refining mask by itself without using the three other proactiv items?

I still have a toner and facial wash just its not proactiv.Can you use proactiv refining mask by itself without using the three other proactiv items?
well you could but the only problem is if u just use the mask itll clean your face but not good enought to heal as fast if u do use all the steps because greese and dead skin particals will build up slower if u do use all the steps instead of just using one.....its better to use it after all the steps before you go to bed