How do you use the proactiv refining mask?

well i wash my face w/ warm water then before the water on my face dries i apply the mask all over my face. then i let the mask set on my face for 15 mins instead of 10. this helps with my blackheads alott.! then i get hot water on a washcloth and move it in circles to remove to mask while pushing it into my pores. wen the mask is off i rinse my face w/ rlly cold water to close my pores