Candles can vary massively, so when choosing a candle you should consider burn time, scent, and sustainability. Soy and coconut wax have a slow, clean burn and are an eco-friendly candle choice, but they can be expensive. Beeswax is also expensive and has a long burn time, but have a scent of honey. Paraffin wax candles are popular because they are more affordable than other options, but they are not sustainable and provide soot. You can also look at palm wax and gel candles.