Using Monster Liquid Latex as Masking Fluid for Watercolors

If you’ve been experimenting with different masking fluids for watercolor, you might have come across Monster Liquid Latex, a product typically used for special effects makeup. While it’s not marketed specifically for watercolor, I’ve been using it for a few years now and haven’t had any issues.

What’s the Difference Between Liquid Latex and Masking Fluid?

Liquid latex and masking fluid serve a similar purpose in watercolor painting—they both create a barrier that preserves the white of the paper by preventing paint from covering certain areas. However, there are a few key differences:

• Composition: Traditional masking fluid is usually made from liquid rubber or latex with added ammonia to keep it from drying too quickly. Monster Liquid Latex is primarily designed for skin application but has a similar rubbery consistency when dried.

• Flow and Application: Monster Liquid Latex has a slightly thinner consistency than some masking fluids, which can be a benefit for smoother application. It spreads evenly and works well with brushes or ruling pens.

• Residue and Staining: Some artists worry about latex staining their paper, but in my experience, I have not had any issues with staining, especially when using high-quality, 100% cotton papers like Arches and Strathmore watercolor cards.

My Experience and Best Practices

I’ve personally used Monster Liquid Latex for a while and found that it works well as a masking alternative. Here are some key takeaways from my experience:

Watch my youtube video here with my very first test!

• Use Quality Paper: I always use professional-grade paper like Arches or Strathmore, which holds up well to masking removal.

• Remove Masking Quickly: I don’t leave it on my paper for too long—removing it as soon as my washes are dry to avoid any risk of damage.

• Test First: While I haven’t had issues, I always recommend testing new products on scrap paper before using them on a finished piece.

Want to See Masking Fluid in Action?

I recently shared a new YouTube video where I demonstrate using a ruling pen and masking fluid to create crisp highlights in a rock painting. It’s a great technique for artists looking for more control over their masked areas. Check it out and let me know what you think!

As with any art supply, opinions vary, and what works for one artist may not work for another. Some swear by traditional masking fluids, while others enjoy experimenting with alternatives like liquid latex. If you’re curious, try it out on a test sheet and see how it works for your technique!

Have you tried different masking fluids in your watercolor practice? Let me know your thoughts in the comments!