With a mere 252 lipsticks available from its site right now, MAC Cosmetics has a basically unfathomable quantity of products available from its range. That's why we're not surprised that many of its best products fall through the cracks . . . that is, unless you're in the know. On a press trip to Toronto, we caught up with 10 internationally adored beauty influencers in the process of making their own MAC lipsticks. Considering they have so much hands-on experience with the brand, we asked them for their thoughts on the most underrated products from the range. Some of them were so under the radar, we'd never even heard of them. Keep reading to discover their favorites, and don't be surprised the following slideshow triggers a shopping spree!