Most electric wax warmers use either incandescent or halogen bulbs. Listings typically show incandescent bulbs for plug‑in models and halogen bulbs for several lamp‑style warmers.
Bulb warmers use a warming (incandescent) or halogen bulb as a flameless heat source. The bulb melts wax cubes in a dish or gently warms jar candles, releasing fragrance without an open flame.
Some warmers are plug‑in models that insert directly into a wall outlet, while others are tabletop warmers with a power cord that sit on a surface and plug into an outlet.
Common materials are ceramic and metal; some designs also include glass elements.
Some tabletop and lamp‑style warmers include automatic timers with 2‑, 4‑, and 8‑hour on/off settings.