Paraffin and soy are the two main options for candle materials. The appearance is similar after production for both candle types. Despite the similarity in appearance, paraffin and soy candles have many differences in the way they are made and how they burn. Knowing the advantages and disadvantages of each type of candle helps you decide what to purchase the next time you buy candles.
Source
As the name suggests, soy candles are plant-based, coming from soybeans. U.S. farmers produce the most soy in the world, so soy candles support local agriculture. Because soy candles are made from plants, this type of candle uses a renewable resource. While the soy itself is natural, soy candles might contain coloring or scents that are not natural.
Paraffin candles are made from petroleum, a non-renewable resource containing several carcinogens. According to Planet Green, the paraffin is made from leftover residue from the oil refining process, which makes use of waste that would not otherwise be used.
Function
Both paraffin and soy candles burn in a similar way, but soy candles typically burn longer than paraffin candles of the same size. Soy candles also burn cooler, according to Planet Green. Cooler wax might prevent burns if a child comes into contact with the melted wax.
Effects
Paraffin candles release soot as they burn that leaves black marks on the candle holder. The soot also collects on walls and furniture, discoloring the surfaces. The soot and chemicals released can also decrease the air quality inside your home. Soy candles burn cleaner, without the black soot. When scented with natural essential oils, soy candles emit a less smothering scent so the room doesn't become overpowered with chemical scents.
Value
Soy candles typically cost slightly more than paraffin candles. However, soy candles also burn longer, which means they last longer. Over time, there is not a large cost difference between soy and paraffin candles since you'll have to buy more paraffin candles for the same amount of burning time.
Considerations
Soy candles aren't as popular in the taper style because the wax is softer than paraffin. Some candles labeled as soy might actually be a blend of soy and paraffin. Read the label carefully to understand what you are buying. General availability of soy candles might be limited in some areas.
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