I bought the #21 and used it once for a hangout with a friend.
- First, just a little but really little amount is more than enough to cover my whole face (which isn't small). I pressed once and lightly, and I could do 2-3 layers, my gosh !!
- Then,the coverage...it does cover my skin and even make it whiter without seeming sick, and it did very well, I was amazed ! It does seems to soothe my blemishes as they werent itchy all day long.
- Small problem about the coverage, I loved the matte finish, but it didn't stayed long on my nose, even with a retouch, it was still quite oily. Maybe because of the hot wheather and my glasses, I'll try once I get my contacts.
Overall, I would use it whithout hesitation for a con...I just have to dose it well ^^''