Pure essential oils are 100% derived from plants – nothing added, nothing synthetic. Fragrance oils, on the other hand, are lab-created scent blends that may contain artificial chemicals, fixatives, or carrier solvents. While fragrance oils smell wonderful and are more affordable, they do not carry the same therapeutic properties as genuine essential oils. If you’re buying for aromatherapy or natural skincare, always choose pure, unadulterated essential oils over synthetic fragrance alternatives.