HIGH QUALITY MATERIAL: The scalp comb is made of ABS material, which is drop-proof and practical. Scalp brushes with roller ball massage, they can deliver liquid while massaging the scalp to promote blood circulation and essence absorption. FREE HANDS: The scalp applicator brush is suitable for applying a wide range of head serums, nutrients, conditioners, hair oils and other liquids. No need to use your hands to accurately deliver liquid serums to the hair shaft and apply them to the scalp instead of to the hair. Massage + Scalp Care: This Hair Oil Applicator can be used to brush your hair with hair care nutrients or oils, allowing the liquid to penetrate deep into the hair shaft and massage the scalp, which stimulates the scalp cells and prevents hair loss. No need to apply it by hand to get the serum exactly to the hair shaft, freeing your hands. Visible 3ML Liquid Tank: precisely graduated for storing small amounts of liquid. The liquid tank can be filled with hair nutrients, oils, conditioners, etc., enough for one treatment. The transparent tank lets you know how much liquid is left in it to avoid wastage. Comfortable experience: this hair oil applicator comb has 6 elastic rolling ball teeth and 7 secondary teeth for a better fit on the scalp and to improve blood circulation to the head. Roll it back and forth on the scalp to massage it in, and the fluid slots to the flow of liquid. The scalp applicator makes you more comfortable and relaxed and gives you the best massage experience. maximum capacity :3ml Product size:70 x 35mm Material: ABS colour: black Package Contents: 1 x scalp massager oil applicator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.