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Spice Up Your Watercolors With Ir-RESIST-ible Resists

Are you ready for another watercolor challenge? Today, I would love to walk you through the step-by- step process of creating beautiful, dream-like textures within your watercolor paintings simply by flinging masking fluid around! Sounds like fun, yes?

I stumbled upon this technique quite by accident one day. I had painted a fun little close-up rose, but when I finished and stepped back, it was alarmingly boring. Throwing caution to the wind (a VERY difficult thing!) I started experimenting with layering more washes and flinging and layering masking fluid. The effect was beautiful and, to my surprise, these paintings are now some of my best sellers at the gallery, so I’d like to share my insights with you.

Follow along to learn this fun technique!

Finished painting with watercolor resist

Step 1. Get a reference photo.

I start off with a simple close-up flower photo. I love this dahlia photo that I took at the N.C. State Arboretum recently. It’s simple, bright and beautiful, plus it’s easy to sketch out.

Pencil sketch of flower

Step 2. Apply masking fluid.

Now, let’s start with our first layer of masking fluid. I like the Windsor & Newton brand of removable masking fluid. You will very easily ruin your paint brush with masking fluid. Thoroughly coat your paint brush bristles with bar soap before you dip it in the masking fluid. Wash your brush every few minutes and repeat this soap-to-masking fluid process.

Hand soap application

Step 3. Fling your masking fluid.

For my first layer, I did intentionally paint masking fluid just on those little finger-like areas of the center of the flower. Now, for the flinging. Dip your brush in the masking fluid and fling/flick it on the paper just a few times for the first wash. Do this sparingly for the first wash or else you’ll have too much distracting white on your page in the end.

Application of masking fluid

Step 4. Apply your first wash.

After the masking fluid is dry (it should feel rubbery to the touch), lay on your first entire wet-on-wet wash. I thoroughly wet the entire page and painted on a wash of Indian Yellow for the flower, Burnt Sienna/Burnt Umber for the center and Prussian Blue for the outside edges.

Watercolor first wash on flower

Step 5. Dry your page with a blow dryer and repeat the process.

After coating your brush with soap, dip it into the masking fluid and go to town flinging! I like to turn my painting to different angles so that the fling patterns vary.

Step 6. Continue to paint layers.

For my second and third layers, I start negatively painting around the flower petals, wet-on-wet with a mixture of deep blues. Prussian Blue, French Ultramarine Blue and a bit of Payne’s Gray. I work on the shadows within the flower, deepening the contrasts between the petals with Burnt Sienna, Violet mixed with Burnt Umber, Indian Yellow and Lemon Yellow.

Tip: Make sure that you thoroughly dry each wash before starting another wash of masking fluid and paint! This is crucial to not ruining your previous work.

Watercolor and masking fluid second application

Around the outside of the flower, I am working wet-in-wet to achieve a smooth backdrop to my masking fluid texture. As I repeat the layering process, I am deepening and making my colors richer and more vibrant. I’m not a pastel girl at all. Color is what we love and color is what we’ll get! Lay it on.

Watercolor and masking fluid third application

Step 7. Complete your layers.

As you feel like you’re getting toward the end of your painting, make sure you are laying your darkest darks within your flower. Don’t be afraid to really darken the center, edges and between the petals. This will make your painting really pop and be vibrant.

Step 8. Remove the masking fluid.

Once you’re satisfied with your layers, it’s time to remove the masking fluid and see what you’ve created! This is my favorite part. It’s like unwrapping a gift on Christmas morning. You’re never quite sure what you’re going to get.

Using an eraser or your finger, gently rub the paper until all of the masking fluid is removed. 

Removal of masking fluid

Step 9. Clean up the edges.

After you’ve removed the masking fluid, you can clean up edges and soften spots with a scrubbing brush. Using water, lightly agitate the spot you want to soften and dab it with a tissue. Scrubbing brushes DO damage the paper, so be careful. You also won’t be able to successfully paint over a spot that has been lightened with a scrubbing brush, so wait until the very end to use this tool.

Scrubbing and lightening painting

Step 10. Frame it!

Your painting is ready for a frame! I’ve attached some photos of other resist florals that I’ve painted to show you the versatility and interesting qualities of using masking fluid in this way.

Completed watercolor paining - Floral Resist 3Resist painting example - Tea Rose resist Watercolor resist example - Rose resist

I hope you enjoyed this tutorial and have the chance to try it! Feel free to contact me with any questions you may have.

Happy Painting!


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THANK you for this tip. The results are stunning and fun. I’m always grateful for the experts who are willing to share a bit of their knowledge without a fee. Some of us can’t always afford to pay, sadly enough. Again, thank you!

Valerie Martin

Can you use masking fluid with acrylics? I just love this technique! Thanks for sharing! Love your work!


Thank you.. very interesting, I was playing with frisket just yesterday.. now I think I will play with it again today!

Becky Laubmeier

Wow! Your results show that experimenting really pays off. Thanks for the tutorial explanation.

Sheila King

thank you for the tip. The paintings are beautiful! I am always looking for different ways of using the masking fluids. Thanks for sharing.

Martha Shelnutt

Thanks for the tip. I can’t wait to try this technique.


Thankyou for helping.I just bought masking fluid. I am going to try this. It takes someone special to take the time to do it

Martha Shelnutt

I tried this technique and was very pleased with it. I will use it again. Fun experience with watercolors1


This is such a fun technique. I like how you layer it up, so different colors show through instead of all white. I am enjoying your tutorials, Cady!

Donna L Burns

Thank you so much for these instructions. I do rosemaling with oils on woodenware right now, but would really like to try watercolor.

Barbara Reynard

I can’t wait to try this. Thank you


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