Watercolor masking fluid

Ideal for watercolor and calligraphy Corect'art masking liquid is very useful for watercolor and calligraphy, in fact it allows you to preserve the white of the sheet, it therefore has two uses: to protect an area of ​​paper, without fluid it is difficult to control and to explore new techniques, that is to say working with layers, adding details, movement, patterns etc... 
This liquid is applied with a brush where you want to keep a white space. 
Once dry you can start painting.