There is a difference between essential oil and fragrance oils. Pure Essential Oils are natural products extracted from different plants' parts through processes such as steam distillation, solvent extraction and expressed oils. Essential oils are natural healing oils. Fragrance oils, aromatic oils are manufactured scents. They are artificially created fragrances and they contain artificial substances. They are designed to mimic the scent of a natural product.
Fragrance oils are used primarily in perfumes, cosmetics and flavorings and are also used by soap and candle makers to enhance the smell of their product. While some essential oils can also be used by soap and candle makers, they are not as commonly used for these purposes due to cost and a more complex blending procedure. Candles and soaps made with essential oils are more high end because of the cost to make and healing properties of the essential oils. Some candle makers claim their product is aromatherapy but are using fragrances not essential oils- Using a Synthetic fragrance is not Aromatherapy it is only Aroma.
Burning synthetic fragrance oils in candles is not ideal, the burning candle produces a toxic chemical smoke vapor - especially if used in a paraffin wax candle and using a cheaper wick. The natural wax & wicks combination burn cleaner, but there will still be some of the chemicals released.
Fragrance oils do not have the healing properties of Essential oil, they only have the aroma. Essential oils are used for Aromatherapy and holistic healing. Essential oils may be used to enhance mood, to relieve symptoms such as pain, fatigue or inflammation, or be used to kill germs. Aromatherapy is the use of #Essential oils to enhance psychological and physical well-being.