This essential oil guiding comb features a reusable and washable design, easily filling 1-15ml of liquid. Made from durable ABS material, it's built to last and is completely waterproof. Its unique 6 elastic rolling ball teeth conform to the scalp's contours, delivering essence directly to the hair roots and promoting blood circulation. Lightweight and portable, it offers smooth liquid discharge and is suitable for all hair types. It accelerates nutrient absorption for healthier, stronger hair.