We highly recommend it! Cleansing is an essential step before waxing. Bacteria, lotion, and other skincare products on the skin can prevent the wax from properly adhering to the hair for effective removal. Plus, waxing also exfoliates the skin, so our post-wax lotion assists in skin recovery and ensures your skin stays supple. While the Dual-Action oil is optional for those without dry skin, it's still a wonderful addition to your repertoire. Not only can it clean wax residue off your warmer, but it's also handy for removing any wax that gets stuck on the skin. So, go ahead and treat yourself to the full pre and post care experience for the best results!