Masking fluid is a staple for watercolor artists who want crisp whites and precise edge control. This article highlights five popular options, comparing their formulations, application methods, and removal outcomes to help you choose the right masking fluid for your watercolors and mixed-media projects.
| Product | Brand | Size | Notes |
|---|---|---|---|
| Winsor & Newton Watercolor Masking Fluid – Colourless | Winsor & Newton | 75 ml | Colorless, non-staining |
| Winsor & Newton Watercolor Masking Fluid – Pigmented | Winsor & Newton | 75 ml | Pigmented version, ASTM D4236 |
| AUREUO Masking Fluid Pen | AUREUO | 28 ml | Precision pen for fine masking |
| White Watercolor Masking Fluid with Brush & Eraser | Tyrbsvlnar | 30 ml | Pen-style with eraser, multi-tool |
| WAN2TLK Masking Fluid | WAN2TLK | 60 ml | Easy-to-peel formula |
Winsor & Newton Colourless Masking Fluid

Winsor & Newton Colourless Masking Fluid is a rubber-latex liquid designed to mask areas you want to protect from pigment during broad washes. It remains colorless when dry, helping to preserve the white highlights and light paper tones without altering surrounding hues. It should not be applied to damp or soft-sized paper, and it cleans away cleanly once the masking is lifted. This option is ideal for artists who want a transparent mask that disappears with minimal trace.
Winsor & Newton Pigmented Masking Fluid

This version combines rubber latex with pigment, offering a slightly tinted barrier that can help you see mask boundaries while painting. It protects areas when applying color washes and conforms to ASTM D4236, giving reassurance about safety and labeling. As with any masking fluid, apply to dry paper and remove carefully to avoid lifting pigment or surface fibers.
AUREUO Precision Masking Fluid Pen

AUREUO offers a masking fluid designed for precision with a pen-style applicator. It preserves crisp whites and highlights by masking areas before applying washes, and the formula dries to a light yellow flexible film. Rapid drying helps maintain painting momentum, and the fluid lifts away with minimal surface disruption when peeled off, keeping the underlying surfaces intact for subsequent layers.
WAN2TLK Watercolor Masking Fluid

WAN2TLK Masking Fluid provides a white, peelable barrier with a handheld pen-style design for controlled masking. It dries quickly and can be peeled away to reveal clean, unpainted areas. The product emphasizes ease of use for masking details and protecting delicate highlights while you apply washes across broader areas.
CAMUTKRY Watercolor Masking Fluid

CAMUTKRY’s liquid masking fluid is a peelable solution suitable for ink, watercolor, gouache, and mixed-media. It dries into a protective film that preserves whites and highlights. A silicone pen and cleaning brush are included to facilitate application and cleanup, allowing artists to mask irregular shapes with minimal surface disturbance.
Pebeo Drawing Gum (Moshify Bundle)

Pebeo Drawing Gum is a classic masking fluid that dries to a peelable film. It can be applied with brush or pen, masking areas of watercolor, ink, or gouache. Once dried, color can be added; the masked areas will remain free of pigment and can be lifted to reveal clean surfaces for subsequent layers. The bundled Moshify applicator set helps with controlled masking.
Buying Guide: Key Purchase Considerations
- Mask type: Decide between colorless, pigmented, or tinted fluids. Colorless masks are less visible on white paper, while tinted masks help you see the masked areas during painting.
- Application method: Pen-style applicators offer precision for details, while bottle-based fluids with brushes are better for broad masking. Consider your preferred workflow and control needs.
- Drying time and removal: Quick-drying fluids speed up sessions. Peel-off formulations should lift cleanly without tearing paper; test on your paper stock first, especially delicate linens like Arches or hot-pressed papers.
- Paper compatibility: Some masking fluids are not recommended for damp or soft-sized papers. Verify compatibility with your watercolor paper to avoid warping or staining.
- Safety and compliance: Pigmented and standard fluids may bear safety markings or labeling like ASTM D4236. If you work with children or students, consider labeled products with clear safety information.
- Reuse and cleanup: Some products include erasers or brushes to aid removal and cleanup. A separate masking eraser can improve removal with minimal surface damage.
- Storage: Store upright and away from heat to prevent leaks. Most masking fluids have a long shelf life when sealed properly.
- Value: If you frequently mask large areas, a larger bottle may offer better value per ounce. For detailing, a pen-style fluid can reduce waste and improve control.
Masking fluid choices vary by formulation and user preference. When selecting, consider the size of your projects, the level of detail you require, and how quickly you want to progress from masking to painting. Always test a small area to confirm lift-off behavior and surface compatibility before committing to a complete piece.