Masking fluid is used primarily with which medium?

• A. For oils
• B. For acrylics
• C. Used to seal the canvas
• D. For watercolors ; will cover areas of the paper that needed to stay white for highlights.

Answer: (D)

Masking fluid is a protective liquid used on watercolor paper to reserve white areas for highlights. Watercolor paints are transparent, so artists often need to keep some parts of the paper white. By brushing on masking fluid, those areas are shielded from paint; when the fluid is peeled away after painting, the paper underneath remains white, yielding crisp highlights and clean edges. Oils don’t work well with masking fluids, and while some acrylic techniques employ masking fluid, its most common use is with watercolors to preserve white areas for highlights.