The wickless, or as we say here flameless, concept is simple – stunning, handcrafted ceramic warmers are used to melt scented wax to release long-lasting candle aromas and give ambient light. We don’t use a flame – instead an electric heating element warms the wax to just over 56 deg. C – candles burn at 1800 deg. C so there is no danger or burns or fires with the Scentsy Safe Candle System!Warming the fragrances at just 56 deg. C also means the candle wax doesn’t burn or give off soot or toxins. Astmatics and those with sinus issues or Cystic fibrosis use Scentsy without any issue.