Soy candles are made from soybeans. therefore they are not toxic like paraffin waxes. They are biodegradable. They are longer lasting and burns cooler since the melt point for soy wax is relatively lower than paraffin, petroleum or beeswax. It is renewable, sustainable, environmentally friendly, and biodegradable, water-soluble. The maximum recommended burn time for soy Candles is four (4) hours per burn. Burning longer than this time is dangerous especially when combined with improper wick trimming. An improperly trimmed wick can create a high flame and temperature forming a deep melt pool that may fatigue even our heat-safe glass over time. Each time before you light your soy candle, trim the wick down to _Ó. Do not allow wick trimmings to fall into your wax melt pool. Always burn candles in areas free from drafts. Burning natural-based candles will result in less toxic air, headaches and lung irritation than with their ubiquitous paraffin cousins. Plus, no black soot on your walls or tables when you enjoy eco-friendly candles!