Mustela Baby 1 2 3 Vitamin Barrier Cream is a soothing cream especially formulated for the daily care of the baby's delicate diaper area. Mustela's best-selling Diaper Rash Cream 123 is a 3-in-1 product that prevents diaper rash and relieves and recovers your baby's delicate skin at every diaper change. Clinically proven to soothe the diaper area and relieve irritation and redness from the very first use.