I got this one from Schminke, for my birthday (thanks mom!). You cover the part of the paper that you want white. When the masking fluid dries it creates a resist, so the paint will not soak into the paper. This will create areas that stay white. In proper “watercolour technique” there is no “white paint”, so you’ve got to plan your white areas before you start your painting. When you’re finished with your painting you remove the gummy texture from the paper, using your fingers to rub it away.
I really like the little bottle I’ve got because it has a pipette opening, and I used it as a pen when making my first try.
I doodled some swirls, and left them to dry thoroughly before I filled the whole page with different colours;
I added masking fluid to my want-to-try-list after reading the very inspirational book Journal Spilling by Diana Trout. I read and reviewed it last year.
In the book Diana uses masking fluid to write with (using a thin brush) and also adds it to a stamp (creating a white stamped pattern). Her advice is to be careful with your tools, this fluid will clog up your brush in no time if you’re not careful.