Went for a makeup consultation Friday night at Chanel counter, a first for me. It was really fun, people nice and walked away with a few of the products. One of them Blanc Universel, a primer/hi-lighter. However, I'm not really sure how to use? I've been on makeup alley and there are rave reviews. It didn't work under makeup as I end up like a ghost (or geisha according to my husband). I want to hi-light so what are good places to use. Should I use fingers or brush? THanks!