Rainbow Cakes by SillyFarm

A split cake (also called a rainbow cake or one-stroke cake) is a single container of water-activated face paint featuring multiple coordinated colors arranged side-by-side. Instead of applying one color at a time, artists load a flat brush or sponge across all colors at once to paint complete multi-colored designs—such as rainbows, butterfly wings, or dragon scales—in a single stroke.

Dampen a 3/4" or 1" flat brush (or a dense high-density sponge) with clean water. Blot any excess water so the brush is damp, not dripping. Swipe the brush back and forth along the stripes of the cake until the bristles are fully saturated with a rich, creamy consistency. Glide the brush across the skin in smooth strokes for instant blending.

For fast line work and wings: a 3/4-inch or 1-inch flat brush, or an angled chisel brush (like the Paint Pal Arty Brush), gives clean lines and sharp color definition. For full-face backgrounds and crowns: a petal sponge or half-round high-density sponge loaded across the cake gives soft, seamless gradients in seconds.

Yes. All Silly Farm rainbow cakes and split cakes are formulated with skin-safe, cosmetic-grade ingredients compliant with FDA and EU safety guidelines. They are non-toxic, hypoallergenic, water-activated, and wash off easily with mild soap and warm water.

A standard 50g container typically provides between 100 and 150 full-stroke applications, making it one of the most cost-effective and essential tools in a working face painter’s kit.