The High-Light powders should be regarded as more of a blush. The actual highlighting quality of it (pearly, light reflecting finish) is actually just an overspray as someone else mentioned. What that means is that the top layer has the pearlescent finish, but after that is used up, it is much more of a satin or matte cheek color.
This was very disappointing to everyone, which is why they are still available and in stock. I love the presentation of the product, with the balloons and stuff, but if you are looking for a real highlighter, try a Mineralize Skinfinish, or another product that has light reflective properties throughout instead of just on the top.