Painting Fur in Photoshop
This short tutorial creates a realistic fur effect in Adobe Photoshop using only basic brushes. The same method works for hair, grass or any particle-like surface. The example is a simple circle turned into a fluffy ball, chosen so the technique is easy to follow.
Two tips before you start
- Work larger than the final size. When you scale the fur down afterwards it looks more detailed and realistic.
- Decide the light direction first. Fur reacts to light: bright at the top facing the light, darker as it curves under, with a shadow at the base.
Step 1: Make tone samples
On a guide layer, use a solid hard round brush with pen pressure on to place four swatches of the base colour: the mid-tone, a darker tone, a lighter tone and a darkest tone. You will pick from these as you paint. You can blend between them for more variation, but four samples are enough here.
Step 2: Block the flow with a soft brush
On the object, switch to a large soft brush with pen pressure on Opacity and Flow. Decide how the fur flows (straight and neat, or loose and messy) and stroke in that direction, starting with the darkest tone where the fur is deepest, less as it comes forward. Do not overthink it; follow the light.
Step 3: Build up with a hard brush
Switch to a hard brush and stroke individual hairs on top of the soft base, always following the same flow. Work from dark to mid-tone to the lightest tone, reducing the brush size as you go. Alt-click to sample tones from the canvas and keep the darkest strokes near the bottom edge so the round shape disappears into fur.
Step 4: Colour from the light
If the light is warm, add a soft yellow on a low-opacity Overlay brush over the lit areas, pushing towards white at the brightest points, and a purple or blue in the shadows on the shaded side. Add a few very bright white hairs with a small hard brush, and a few dark accents on Multiply.
Step 5: Drop shadow
On a new Shadow layer, paint a dark shape with a soft brush under the object, apply Gaussian Blur and position it by the light.
Conclusion
Fur is an illusion built from tone and brush size: block the flow soft, refine it hard, and let the light decide where the bright and dark hairs sit. Swap the subject and the same steps give you hair or grass.
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