FAQ
Common questions
What's the difference between traditional and acrylic gouache?
Traditional gouache (Holbein, Winsor & Newton) stays water-soluble forever — you can rehydrate and rework it even days after drying. Acrylic gouache (Turner, Liquitex) dries waterproof and cannot be reactivated. They look similar but require completely different techniques. Most beginner tutorials and TikTok creators use traditional gouache.
Do I need artists'-grade paint or is student grade fine?
Artists'-grade — this is the one medium where the quality gap is most obvious. Student-grade gouache has so much chalk filler it looks streaky and dull even when applied correctly. Entry-level professional brands (Holbein, Winsor & Newton) are only $20–30 more for a starter set and perform completely differently.
What paper should I use for gouache?
Cold-press watercolor paper at 140 lb (300 gsm) minimum. Anything lighter will warp and buckle as wet paint dries. Strathmore 400 or Canson XL are reliable and affordable. Arches is the step-up for finished work. Bristol board works for smooth, graphic illustration styles that want a flat surface.
Why does my gouache look dull and chalky when it dries?
Either you're using student-grade paint (which has too much filler), or the paint is too thick with not enough water. Gouache should have a creamy, fluid consistency — about the thickness of heavy cream. Add a small amount of water, test on scrap paper, and aim for a smooth, opaque coat in a single pass.
Can I mix gouache with watercolor?
Yes — traditional gouache and watercolor are fully compatible. Mix them for more opaque watercolors or softer gouaches. Keep a clean palette to avoid muddy results. Note that acrylic gouache is NOT compatible with watercolor — they behave differently when rewetted and will separate or pill.
How do I get crisp white borders in my gouache paintings?
Blue painter's tape. Tape the edges of your paper before you start, press the tape down firmly so paint can't bleed under it, paint all the way to the tape edge, and remove the tape while the paint is still slightly damp. The clean white border is just the untouched paper underneath.