Both cleaning solution and brush are produced from environmentally friendly raw materials. The cleaning solution is vegetable based with coconut oil and a naturally occurring sugar surfactant. It is neither poisonous nor corrosive and breaks down within 48 hours compared to other solutions
that need at least 30 days. The brush does not contain any metal parts. Using only 3-4 ml once a week, the solution will last approximately one year. Includes one refill.