There are many alternatives to masking fluid, in this post I explain 8 alternatives with examples that you can try using.
Comparing Masking Fluids - Jackson's Art Blog
How to use masking fluid with watercolour - 8 DOs and 8 DON'Ts
Preserving White in Watercolour (7 Reasons You DON'T Need Masking
How to Use Masking Fluid in Watercolour - Top Tips! Emily Wassell Art
Beginner here, 30f trying out watercolor as a break from intrusive
Aqua: Let us Master Water, Ocean, Waves and Seascapes with
Top Tips for Masking Fluid Magic with Watercolors — Ohn Mar Win
A Quick Alternative To Masking Fluid For Small Patterns In
Watercolor Masking Fluid Alternatives (10 Professional Tricks
8 Excellent Alternatives to Masking Fluid - My Art Aspirations
Best Masking Fluids and Liquid Friskets for Watercolors –
Preserving White in Watercolour (7 Reasons You DON'T Need