--- title: "Watercolor for kids: wet-on-wet, blooms and salt" description: "Watercolour (watercolor) for kids: wet-on-wet, wet-on-dry, blooms, salt starbursts and blotting, with easy steps and what real paper does." source_name: "Game Tailors" source_url: "https://extreemtekenen.nl/en/techniques/watercolour-for-kids/" site_home: "https://extreemtekenen.nl/" source_description: "The drawing app where the paper is real. No ads, no accounts, no data collected." locale: "en" legal: - "Game Tailors · Schieweg 15Y-40, 2627 AN Delft (NL)" - "KvK 92437702 · VAT NL866044474B01" - "info@gametailors.com · +31 6 4227 5919" copyright: "© 2026 Game Tailors" published_at: "2026-10-24T00:48:38.539Z" modified_at: "2026-10-24T05:06:02.426Z" --- # Watercolor for kids: wet-on-wet, blooms and salt ## Let the water do the painting Watercolour is paint that travels with water. On wet paper it spreads and blends by itself; on dry paper it keeps a crisp edge. As it dries, colour gathers at the rim, drops of water push it into blooms, and salt leaves little starbursts. [Play in your browser]()[Do it for real](<#for-real>) - Ages 4\+ - 15–45 minutes - Cheap materials ![Painted illustration of the painter brushing a rainbow watercolour that bleeds into wet paper, with crayons, markers, a paint box and a child's rainbow drawing.]() ## Quick facts Age 4\+ Time 15–45 minutes Mess Low to medium Adult needed To set up the water and paints You need \(cost\) A watercolour set, a soft brush, two jars of water, thick paper On screen / for real Both ## What you'll make One practice sheet with four tricks on it: a soft wet-on-wet sky, crisp shapes painted on dry paper, salt stars, and a bloom or two. After that, children know what the water will do and can choose it on purpose. ## In Extreme Drawing **Watercolour** is on the drawing bar, free, in nine colours. The paper underneath is simulated in half-millimetre cells, each with its own fibres and wetness, so it behaves like real paper: - **Each stroke wets the paper.** Colour spreads into wet areas with ragged, fibre-shaped edges, and dries with a darker rim and a faint yellow-brown tide mark. - **Wet-on-wet and wet-on-dry.** Paint into a wash that is still wet and the colours bleed into each other; paint on dry paper for crisp edges. - **Blooms.** **Water → Drops** \(Bathroom\) on a drying wash push the colour out into a frilly “cauliflower” with a dark rim. - **Salt.** **Sieve → Salt** \(Kitchen\) on wet paint leaves pale starbursts. - **Blotting.** Press the **Paper towel** \(Bathroom\) on a wet wash: it lifts the colour in the towel’s quilted pattern. - **Glazing.** The same colour again doesn’t turn to mud; a different colour on top mixes. - **The paper itself.** Wet paper cockles as it dries and never quite flattens. **Put in the freezer** grows feathery ice-crystal ferns in wet paint, and at the easel soaked paper runs and drips off the bottom edge. Everything in this list is free. [Play in your browser]() ![Painted illustration of paper strips and a coffee filter in glasses of water, where black marker dots have spread into blue, pink and yellow bands, watched by the painter.]() ## Do it for real **You need** - A pan watercolour set \(tubes for older children\) - A soft round brush, size 8 to 12 - Thick paper: watercolour paper or heavy cartridge paper - Two jars of water: one to rinse, one kept clean - Kitchen paper, a pinch of table salt, masking tape ### Four tricks on one sheet 1. Tape the paper downMasking tape round the edges keeps the sheet flatter as it dries and leaves a clean white border. 2. Wake up the paintsDrip a drop of clean water onto each colour you want and wait a minute. 3. A wet-on-wet skyBrush clean water over the top half, then touch in blue and a little yellow. Watch them spread and blend by themselves. 4. Wet-on-dry shapesOn the dry bottom half, paint a house, a boat or a fish. The edges stay sharp. 5. Salt starsWhile a patch is still shiny-wet, sprinkle a pinch of salt. Let it dry completely, then brush the salt off. 6. Blooms and blotsDrip clean water into a wash that is drying but not soaking for a bloom, or press kitchen paper onto the wet sky for clouds. Safety and clean-up Choose paints labelled non-toxic, and teach “rinse, don’t lick” for brushes. Keep the water jars away from elbows. Leave the paint box open until it is dry, so the pans don’t go mouldy, and rinse brushes and store them bristles up. ## Variations to try ### Autumn trees Wet-on-wet reds and oranges for the leaves, then dry brown branches painted on top once it has dried. ### Winter snow A blue wet-on-wet wash with salt sprinkled in: the starbursts look like falling snow. ### Galaxy Dark blues and purples blended wet-on-wet, salt for stars, and a white crayon planet hidden underneath. ### Rainbow blends Wet a strip of paper and touch in the rainbow’s colours side by side. Where do they mix? ## In the app vs on paper ### On screen Blooms, tide lines and salt stars follow the same physics every time, and Undo is one tap. You can freeze a wet painting for ice ferns, or stand it at the easel and watch it drip. Everything here is free. ### On real paper The paper matters more than the paint: on thin printer paper colour soaks through and the sheet buckles. Real pigments can granulate, settling into the grain of the paper in a speckled way, which the app doesn’t show. ![Painted illustration of the painter dripping blue, pink and yellow paint onto a salt-covered glue star and flower on dark card, the colour spreading along the salt.]() ## Why watercolour does what it does Wet paper is like a sponge: the colour travels wherever the water goes. When a wet patch dries, the water at its edge goes last and carries colour there, so the edge ends up darker. **For grown-ups.** **Capillary action** draws water and pigment along the paper fibres, which is why wet fronts are ragged rather than round. As a wash dries, evaporation is fastest at its edge, so water flows outward to replace it and carries pigment there: the **coffee-ring effect**, or edge darkening. A drop into a half-dry wash flows out into the damper paint and pushes pigment into a bloom with a hard rim. Salt is hygroscopic and draws water towards each grain, pulling the paint round it into star shapes. Fibres swell when wet and shrink unevenly as they dry, so the sheet cockles. ## Try next: what do you predict? ### Wet or damp? Which spreads further: a drop of colour on soaking-wet paper or on damp paper? ### Salt on dry paint? Does salt do anything once the paint has dried? ### Tissue or kitchen paper? Which lifts more colour, and which leaves a pattern? ### Why the dark edge? Paint a puddle of colour and watch it dry. Where does the colour end up? ## In the classroom Watercolour fits KS1 and KS2 art \(painting techniques with a range of materials\) and science about water: absorbency in KS1 everyday materials, and evaporation in KS2 Year 4 states of matter. The paper chromatography experiment shows the same travelling water splitting a colour apart. [Paper chromatography]()[Ideas for teachers]() ## Questions parents ask What paper is best for watercolour with kids? Watercolour paper or heavy cartridge paper, about 200 g/m² or more. Printer paper buckles and tears when it gets wet. What is wet-on-wet watercolour? Painting onto paper that is already wet, so the colours spread and blend with soft edges. Wet-on-dry, painting onto dry paper, gives crisp edges. Why does watercolour dry darker at the edges? As the paint dries, water flows to the edge, where it evaporates fastest, and takes colour with it. It is called the coffee-ring effect. How do you do the salt technique? Sprinkle table or coarse salt onto paint while it is still shiny-wet, let it dry completely, then brush the salt off. What age can children start watercolour? From about 3 or 4 with a chunky brush and a few colours. Older children enjoy controlling wet-on-wet, blooms and salt. ## Try these next ![Painted illustration of the painter dripping blue, pink and yellow paint onto a salt-covered glue star and flower on dark card, the colour spreading along the salt.]() ### [Salt painting]() Glue, salt and colour that races along the line. ![Painted illustration of the painter brushing blue watercolour over paper, revealing a white crayon fish and bubbles.]() ### [Crayon resist]() A white crayon drawing appears under the paint. ![Painted illustration of paper strips and a coffee filter in glasses of water, where black marker dots have spread into blue, pink and yellow bands, watched by the painter.]() ### [Paper chromatography]() A black marker hides blue, pink and yellow. ## Paint wet-on-wet on screen Make a bloom, sprinkle salt stars, blot a cloud and freeze a wet painting. Then get the real paint box out. [Play in your browser]()[All art techniques]()