Ever wonder why your paint behaves so differently on one paper vs another?
It’s not just the brand—it’s the sizing.
What is “sizing” anyway?
In short, it’s how the paper is treated to handle water.
There are two kinds:
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Internal sizing (mixed into the pulp)
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External sizing (applied to the surface, usually gelatin)
Let’s break it down with two popular options I use in the studio...
Arches Watercolor Paper
Sizing: Internal + External (gelatin)
This combo makes the surface more resistant to water, which means:
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Paint sits on top longer
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You get brighter colors, cleaner edges, and smoother blends
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It’s easier to lift or glaze without staining
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Feels slightly slick when wet—great for wet-on-wet fun
Pro tip: You can rework an area more before the paper gives up on you. It’s amazing for detailed layering and vibrant results.
Canson XL Watercolor Paper
Sizing: Internal only (no surface sizing)
Because there's no extra surface sizing:
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Paint sinks in fast
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Colors dry softer or even dull
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Lifting and blending are harder
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Paper can start to pill if you fuss with it too much
Best for quick practice, flat washes, or loose sketching
Pro tip: Work quickly, or with a lighter hand to avoid damage
So, which one should you use?
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Use Arches when you want more control, vibrancy, and room to layer
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Use Canson for budget-friendly practice, warm-ups, or looser work
Check out my video - my first try on Canson XL paper HERE!
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