MAC’s iconic MACStack Mascara, now in a waterproof format. Starring a continuously buildable formula, the clump-resistant mascara delivers up to 24 hours of wear, combining volume, lift and length for a show-stopping finish.Exclusive Drench-Defense Technology coats the lashes in a protective veil that repels water, working to ensure that the mascara stays locked in place, while black pigments offer bold definition. Pair with the False Lashes Maximizer primer for a full-bodied look.