One of Mary Kay’s best-selling products stateside is also a blockbuster seller in Mexico. Their Oil-Free Makeup Remover ($14, marykay.com to locate an Independent Beauty Consultant near you) is a customer favorite that continues to deliver both profits and results. The oil-free formula is moisturizing, yet not greasy, and it can handle the toughest remnants of last night’s smoky-eye makeup in seconds. How’s that for a wise investment?