We then learned to set our face. They taught us there are 2 types of powders, Setting and Finishing. Finishing powders contain an ingredient that has silica so nothing moves. So if you try to add any product over top it won't work. It also can have a white cast in pictures. Setting powder is what we used because it can be used at any time and doesn't cause a white cast. They told us to use a big fluffy brush and instead of brushing it all over the face we should pat it. This gives more coverage, helps diminish pores and smooths out any uneven foundation lines.