Our Fuel & Tint Brow Tinting Mud creates matte brows with high definition. Its temporary tint fills in gaps and also contains nutrients such as Amazonian clay, castor oil, argan oil, rapeseed oil, coconut oil and shea butter. These ingredients support and strengthen hair follicles. The antioxidants promote cell production while the vitamins in argan oil promote healthy skin - so, they not only promote hair growth, but also help you grow thick, healthy hair too. Choose between brown or black for your ideal colour.