Trader Joe’s Peppermint & Tea Tree Shampoo Bar - a new way to shampoo. Instead of a liquid packaged in a plastic bottle, this Peppermint & Tea Tree Shampoo is an oval shaped, solid Bar. The base is a combination of natural, skin-loving oils - coconut oil, olive oil, jojoba and oil of peppermint, tea tree and eucalyptus. Dried mint leaves mixed into the bar give it a pretty green-flecked appearance. Cleans hair while also creating a truly satisfying shampooing experience. No parabens or sulfates!