Masking fluid products are supposed to help you create better watercolor art, but many artists have trouble using them. Learn more here.
A Guide to Masking Fluid - Jackson's Art Blog
Using Masking Fluid with Watercolors: Everything You Need to Know
Winsor & Newton Watercolor Medium, Art Masking Fluid
Winsor & Newton® Colorless Art Masking Fluid
Fineline Applicators Masquepen
Daniel Smith Masking Fluid & 5 Tip Applicator System
Frisket, Masking Fluid - Demco EnCouleurs Inc. – Mona Lisa Artists' Materials
This medium masks and protects areas of work from subsequent layers of color. Art Masking Fluid creates a water impervious film made from pigment and
WINSOR & NEWTON Art Masking Fluid
Fineline Masking Fluid Resist Pen, Hobby Lobby