Macy's is expanding its youthful, contemporary Impulse concept from fashion to beauty. A new Impulse Beauty department will showcase brands like Urban Decay, Stila, Too Faced, Essie and others. Mall of America will be the first (and so far only) location to get the new department. It is scheduled to open April 2 with a party, including beauty tips from pros and special gifts with purchase. Meanwhile, Macy's downtown Minneapolis store no longer carries Nanette Lepore. Nor does the "flagship" boast the new Bar III department for young shoppers. Increasingly, you've got to go to the 'burbs to get the good stuff.