Candle materials: There are a few popular materials for candles, including soy wax, paraffin wax, vegetable wax, coconut wax, and some others. Paraffin holds a scent well; soy wax lasts for a long time; palm wax has a high melting point. Ensure candles are fully extinguished before walking away. Keep candles away from flammable materials (like curtains or hair) and don’t burn them in drafty rooms. Don’t burn candles for more than a few hours at a time.