Visible 3ML liquid tank: precisely graduated for storing small amounts of liquid. The tank can be filled with hair nutrients, oils, conditioners, or similar products, enough for a single treatment. The transparent design lets you see exactly how much liquid remains to avoid wastage. material: made of ABS material for durability and drop resistance. The scalp comb includes a roller ball massage feature that delivers liquid while massaging the scalp, helping promote blood circulation and better essence absorption. Massage plus scalp care: use this Hair Oil Applicator to brush your hair with care nutrients or oils, allowing the liquid to penetrate deep into the hair shaft while massaging the scalp. This stimulates scalp cells and helps prevent hair loss. It simplifies the process of applying the serum precisely to the hair shaft without the need to apply by hand. hands application: suitable for applying a wide range of head serums, nutrients, conditioners, hair oils, and other liquids. Delivers liquid directly to the scalp and hair shaft without using your hands to target the area. Use scenarios Routine scalp nourishment: during a regular scalp massage, apply nutrientrich oils or serums with the applicator to maximize absorption at the roots and throughout the scalp. Deep conditioning prep: apply conditioners or treatment oils before washing to help the product penetrate deeper into the hair shaft and support healthier hair from root to tip. Onthego or busy schedules: use the hands design to the scalp and hair without manually guiding liquid, making it convenient for quick touchups or multitasking.