Brain in a Jar Candle This Brain in a Jar Candle is a special way to spice up your décor. It displays a pink human brain floating in a clear gel-like substance. These candles also make for unique housewarming gifts year-round. Our unscented candles are sure to make a statement. They are quite detailed and show off all of the brain’s gyri and sulci. The clear gel is adorned with multiple air bubbles, making each piece unique.