Mericonn Hair loss prevention scalp massage comb for home or travel Support Any LiquidThe comb can use with hair growth oil, hair tonic, hair serum and any liquid type scalp solutions, just pour your solutions into the comb, then combing to dispense onto scalp. Massage RelaxHelp to promote blood circle, relax and fatigue relief. Frequent use can prevent from headache or intermittent headache. Easy to UseCompared to traditional fingertips massage, this comb can help lead the solutions directly onto scalp, make the follicles absorption better, and keep the hand fingers clean. Which is more convenient. Sophisticated Design16mm filling hole, convenient for clean and liquid filing. 30ml liquid tank, is large enough for liquid loading, meet one time treatment usage.The liquid tank using fine vent design, will be more uniform and smoother for the liquid