The real eye catcher with this plant is the stems, which are shaped like zig zags or fishbones and look like leaves. Although the ric rac plant is a cactus, it has slightly different light and watering needs than cactuses traditionally do. This plant hails from rain forest conditions, meaning it grows under a dense canopy of greenery. This creates shade and diffuses light.
Indoors, the best light for the ric rac cactus is bright indirect light. I have mine hanging by a window that gets bright midday, afternoon, and early evening sun. Too much bright direct light can damage this plant, but that usually isn’t a problem indoors.