I know that I'm probably soooo late when it comes to recommending this product but however if you wear makeup & you find it not lasting long enough, sliding away & looking like a grease ball 3 hours in after application, you need to try MILK OF MAGNESIA! Yes it is a laxative but can be used as a primer/face mask! Only use this before applying your makeup if you truly do suffer from extreme oily skin! Or just apply it to the areas that you know you get oily! HOWEVER, don't use this every single day because your skin is acidic & you don't want it to start breaking down your skin from overuse! Only use it for special events! A lot of makeup artist use it on brides, etc. celebrities use it & its super inexpensive too!