When I researched white watercolors for my courses, all I found online were a bunch of long-winded articles making assumptions about the use of white. Often these articles are written for word count and sometimes not written by artists at all! Lengthy intros about breaking the rules, when in reality
Top 9 Most Versatile White & Off-White Paint Colors - Gracious Home Interiors
Adding WHITE GOUACHE to WATERCOLOR (and comparing 5 BRANDS of white gouache)
U.S. Art Supply 11 x 14 Premium Heavyweight Watercolor Painting Paper Pad, Pack of 2, 12 Sheets Each, 140 Pound (300gsm) - Cold Pressed, Acid-Free, Wet, Dry & Mixed Media - Artists
Ink vs. Watercolor = Which one is better? - KAREN CAMPBELL, ARTIST
How to leave whites in watercolors
The Biggest Watercolor Secret Revealed - (Understanding the water to paint ratio)
ZenART Superior 100% Cotton Watercolor Paper 140 lb Cold Press - 12x12 inches, 20 Sheets, Acid-Free, Travel Block, 2-Side Bound - for Watercolor, Gouache, Ink, Acrylic and Mixed Media
Tips for using the different watercolour whites
Adding Color for Depth in Watercolor
Adding WHITE GOUACHE to WATERCOLOR (and comparing 5 BRANDS of white gouache)