Why Zum Glow? When the lights turn off, the Glow turn on. Setting the mood ablaze with a penetration of pure essential oils, Zum Glow is more than a candle. It''s a gentle coaxing. Lovingly hand-poured with a lead-free wick. And made with all-natural soy, so it burns cleaner, cooler and longer than paraffin candles. Light one up.