(TrendHunter.com) Sephora Canada turned customer wishlists into public declarations with a holiday campaign that puts beauty product hints on billboards. Canadians were invited to DM the brand with their most-wanted…(TrendHunter.com) Sephora Canada turned customer wishlists into public declarations with a holiday campaign that puts beauty product hints on billboards. Canadians were invited to DM the brand with their most-wanted…