1. Canned or tubular pigments cannot be used directly after purchase. Pigments need to be put into the pigment box according to the color card; After you put it in, you need to add water to the paint, stir it evenly with a small shovel, and then cover the box tightly for easy storage. Be careful not to have too much water, or there will be cross-color between pigments.

2. Gouache pigments are mainly packaged in three forms: canned, tubular and boxed. Although tubular and canned gouache pigments are cheap, they need to be squeezed into another container for use, which is more troublesome; Boxed pigments can be used directly, but each box is heavy, difficult to carry and expensive.

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