New. Safe & effective. Zarbee's Story: Dr. Zak Zarbock, a pediatrician and father, couldn't find effective chemical-free products to keep the whole family healthy, so he created his own products, including handpicked natural ingredients, whenever possible. The result is Zarbee's Naturals. Safe & effective. Soothing chest rub with eucalyptus, lavender, chamomile and pine oils in a beeswax and shea butter balm.