FLUNBRATO 100% Cotton Watercolor Paper
1. What is cotton watercolor paper?
Paper made from cotton fibers instead of wood pulp. Cotton fibers are longer and stronger, so the paper absorbs water more evenly, holds its shape when wet, and stays flexible for years. Wood-pulp paper, which is what most cheap sketchbooks use, gets soft, fuzzy, and warped once it sees water.
2. Does "100% cotton" actually matter?
Yes, and you can tell within the first brushstroke. Cotton paper takes water without buckling the way wood-pulp paper does. Colors sit on the surface more cleanly. The paper also lasts much longer without yellowing. If you have ever watched a watercolor wash turn into a fuzzy mess on cheap paper, you have already seen the difference.
3. What is GSM, and why is FLUNBRATO 600gsm?
GSM stands for grams per square meter — paper weight. Most watercolor pads are 300gsm. FLUNBRATO's sketchbook is 600gsm because we mount two sheets of 300gsm cotton together into a single spread. That extra thickness means the page stays flat under heavy washes, holds wet-on-wet work without cockling, and feels closer to painting on a board than on a sheet of paper.
4. Cold press vs hot press — which should I pick?
Cold press has a slight tooth (texture), holds water in small pockets, and is the most common choice for traditional watercolor. Hot press is smooth, dries faster, and is preferred for detailed illustration, ink work, or colored pencil. Both work on cotton. If you are not sure, start with cold press — it is more forgiving for beginners and gives that classic "watercolor look" people expect.
5. Will my colors look different on cotton paper?
A little, and most people like the difference. Cotton paper tends to make pigments look slightly more luminous because the water spreads more evenly before drying. Granulating pigments (like burnt sienna or ultramarine) show more texture on cold press cotton. If you are used to painting on cellulose paper, give yourself a few pages to adjust.
6. Do I need to stretch cotton paper before painting?
For most work, no. 300gsm cotton and above stays flat on its own, especially if you tape it down or use a block. Stretching (soaking and stapling to a board) only matters if you plan to flood the page with very large washes for a long time. For everyday sketching, just tape or use the pad's edge.
7. How does it handle wet-on-wet and layering?
This is where cotton paper earns its reputation. Wet paint blends into wet paint smoothly without flooding. Drying one layer before adding the next (glazing) keeps edges crisp. Cockling — that wavy buckling you see on cheaper paper — is rare on 300gsm cotton and almost nonexistent on 600gsm.
8. Is cotton paper good for beginners?
Honestly, better than cheap paper. Beginners make the mistake of blaming themselves when colors bleed or paper buckles. Usually the paper is the problem. Cotton forgives more errors and lets you focus on painting instead of fighting the surface. If you are learning, 300gsm cold press cotton is the safest starting point.
9. Will ink, marker, or pen bleed through?
On 300gsm cotton, most waterproof fineliners and fountain pen ink stay where you put them. Felt-tip markers and water-based pens can feather slightly because cotton absorbs water. If you plan to mix watercolor with pen work, test a corner first or use pigment-based drawing inks, which sit on top of cotton cleanly.
10. Can I use gouache, ink, colored pencil, or other media?
Yes. Cotton paper is the most versatile watercolor surface, and it accepts almost everything you would want to throw at it: gouache, acrylic ink, colored pencil, pastel, charcoal, light collage. The 600gsm weight in the FLUNBRATO sketchbook handles mixed media without warping.
11. What does "gutter-free" and butterfly binding actually do?
In a normal sketchbook, the binding leaves a strip down the middle of every spread where the paper curves into the spine — the "gutter." That curve interrupts any painting that crosses the center. FLUNBRATO uses traditional Chinese butterfly binding, where the spine sits along the edge of the page, not the center. Open the book and the spread lays almost completely flat, so a single painting can run from one page to the next without breaking.
12. How should I store the sketchbook so pages stay flat?
Keep it closed when not in use, somewhere dry, out of direct sunlight. The 600gsm pages will relax slightly if left open for a long time, which is normal for any heavy watercolor paper. If a page does curl a little, place it under a heavy book overnight — it will flatten back out.
13. Is the paper archival? Will it yellow?
100% cotton paper is considered archival when stored reasonably. It resists yellowing far longer than wood-pulp paper, which is why museums use it for original watercolor works. Keep the sketchbook out of prolonged direct sunlight and humidity, and the pages will look the same decades from now as they do today.
14. Can I paint on both sides of a page?
We do not recommend it. The double-layer mounting on FLUNBRATO's 600gsm sheets is designed for one-sided painting. Paint on the back and you will feel texture transfer from the other side, especially with wet washes.