New. 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. Petroleum Free. No-mess Tube. No artificial fragrances. No Dyes.