Fibers (fur, hair)
Rendering fur and hair so they read as many fine strands, with believable shape, thickness, and light response at every scale.
What it is
Fibers are any bundled strands: hair, fur, manes, tails, beards, eyebrows, lashes, wool. You're not painting single hairs — you're organizing thousands of strands into clumps, then into an overall mass. You decide where the volume is thick or thin, straight or curled, groomed or messy, then light that mass like a simple form before adding strand detail.
You move between three scales. First, the big shape: the overall helmet of hair, the cylinder of a ponytail, the puffy volume of fur on a collar or animal body. Second, mid-scale clumps: wedges, ribbons, tufts that follow the growth direction. Third, a few fine strokes and loose flyaways that suggest strands without covering every millimeter in lines.
Light scatters in and between strands. On lit sides you get soft, broad halftones and a brighter rim where light catches and reflects along many tiny cylinders. In shadow, keep some internal softness and bounced light so the fur or hair doesn't turn into a flat black shape. Keep the flow direction visible: strokes follow growth from root to tip, bend around the skull or body, and break apart at tips and edges instead of random scratches.
Why it matters
Without it, hair and fur look like hard plastic sheets, noisy scribbles, or flat helmets that ignore the skull underneath. Over-detailing every strand muddies your value structure and makes heads and creatures unreadable at a distance; under-structuring gives cotton-candy blobs with no sense of flow. Controlling fiber volume, clumps, and light lets you design hairstyles and coats that support the character and hold up in close-ups.
You can check it when
- ✓You can shrink your hair or fur to a small thumbnail and the volume, flow direction, and light/shadow pattern still read clearly.
- ✓You can paint hair or fur in two different colors and lengths (e.g. short dark fur, long light hair) so they feel like different materials, not recolors of the same brushwork.
- ✓Your strokes follow believable growth directions around the head or body: strands emerge from roots, wrap over forms, and taper at tips instead of forming parallel or random lines.
- ✓You can group fibers into clumps and transitions: solid masses, broken edges, and a controlled number of flyaways, rather than scribbling strands evenly everywhere.