Mont Marte Masking Fluid Premium 120ml (4.06 US fl.oz), Masking Fluid for Watercolor Painting, Keeps Areas Free of Color And Edges Crisp, Resists Watercolor, Ink and Pouring Paint

This product is easy to apply with a paint brush (suggest working a dab of dish soap into brush prior to avoid the masking fluid to clump and stick in brush). Removes easily (make sre paper is dry)

The best way to use this is to go to a dollar store and buy super cheap children’s paint brushes, that way each time you use a brush you can just throw it away. If you let it dry on the bristles, you can use it again to get very fine lines in the painting.It’s important to make sure the lid is on tightly after use otherwise a skin will form across the fluid.The bottle may look small, but it lasts very long time and it was a very good value.

Easy to apply and peel off. But if I apply over a painted area it peels off the paint too. May be it’s normal I just didn’t know about it. But really good for price.

It works wonderfully, and is easy to peel off once your painting is dry.It has a perfect consistency, and dried fast. No glooping or clumping.I also bought masking pens, and the consistency of the mask was perfect to make straight lines with the pens.Exactly as described, it also arrived very quickly.

I am now learning about the masking fluid. It will block off a section of your watercolor painting. It will prevent the colors not to bleed together. It smells awful but the masking fluid does an excellent job with blocking off any watercolor bleeding.

Ii was quite happy with this item and would purchase it again

Do not buy. Manufacturer provides no help. Product is useless. This product arrived absolutely solid. Amazon recommended that I contact the manufacturer, which I did. They gave the ridiculous advice to "shake it". It is solid. They requested that I open it and send photos of it and the batch number from the box. I did. Then they did nothing except to say they'd pass it in to their team and I should return (a now open and disturbed product) through Amazon.

It’s ok to use, just don’t forget to use a crappie brush because it does ruin them if very time. It goes on clumpy and has an annoying smell, but aside from those issues, it does the job.