Step into summer by treating your hair to this plastic-free shampoo bar This Lavender shampoo bar with tea tree has added castor oil, coconut and olive oil, giving it a triple richness and a wonderful ability to moisturise. Organic argan oil is a wonderful natural conditioner. Meanwhile, the bar’s essential oils of lavender and tea tree do a great job of bringing a wonderful scent into the mix. Each vegan shampoo bar is handmade with argan oil, castor oil, coconut oil, olive oil, lavender and tea tree essential oils which are naturally nourishing and moisturising for your hair.