Peppermint & Eucalyptus Shampoo Bar. Each Peppermint & Eucalyptus shampoo bar is handmade with Argan Oil, Castor Oil, Coconut Oil, Olive Oil, Peppermint & Eucalyptus essential oils. Ingredients: Sodium cocoate, Sodium olivate, Aqua, Sodium castorate, Argania spinosa (argan) kernel oil, Mentha piperita (peppermint) oil contains limonene, Eucalyptus globulus (eucalyptus) leaf oil contains limonene The effectiveness of Shampoo Bars may be affected by hard water, dyed hair & treated hair.