When you receive it, don't use it right away. First, immerse the brush in water or in the thinner for a while. Slap the brush on a hard surface and then spin it around by the handle to ensure that any loose bristles are freed. Dip the brush into your paint Then Squeeze out repeating the excess paint on the edge of the paint bucket, then paint an X shape on some sheets of newspaper, going over it until all the paint on the brush is used. Repeated several times, The brush can be used normally. When you are not using it for a long time, please put it in the preservation reagent or suspend the seal to prevent weathering.