I have been on DK's regimen for six straight years. I have clear skin and still apply BP twice daily. However, I get a lot of shine all day with BP application - and THIS POWDER (I use sheer) is the only powder (I've tried all shine-control powders, talc and talc-free) that controls my BP shine all day. Even all summer in the humid south. NO JOKE. Also - it's the first makeup product I can wear consistently (have worn it for 3 months straight when at work M-F or if going out) and it does NOT clog my pores or break me out. No itchiness, no smells. It's great. I only wear this to control shine - no other skin makeup. Works amazing. It's also CHEAP and TALC-FREE (which I think is why it doesn't break me out). If you have issues with shine - try this stuff. It's my HG powder.