To prolong the service life of the hair, please use the oil on the hair for cleaning With, you can use to lubricate the upper and lower part of the tool, which can reduce the of the and extend the service life An ultra-thin anti-rust film can be formed on the surface of the milling cutter Colorless and odorless, high-purity mineral oil will not pollute the hair 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