With , you can use to lubricate the upper and lower part of the tool, which can reduce the noise of and extend the service life. To prolong the service life of the hair , please use the oil on the hair for . Colorless and odorless, high-purity mineral oil will not pollute the hair. An ultra-thin anti-rust film can be formed on the of the milling cutter. The trim for head oil is mineral oil, which is a special tool maintenance . It will not evaporate, dry or stick when dripping on the trimmer's , which is different from engine oil.