The interchangeable EcoTools Total Senses Brush Duo range features an interchangeable brush to create a personalized aromatherapy experience. Interchangeables is a customizable, eco-friendly design that aims to make you feel beautiful while reducing waste. Place your favorite essential oil in the brush handle where the ceramic beads are located. Ceramic beads will absorb essential oils to leave you with an aromatherapy experience while applying your makeup. Match any green brush heads to your green handle. Interchangeable is the simple, space-saving way to take your beauty routine to the next level. Feature