Essential oil blends are mixtures of two or more essential oils combined to create a specific aroma or therapeutic effect. These blends can be used for various purposes, such as relaxation, mood enhancement, or physical wellness. Each oil contributes its unique properties, making the blend more effective than a single oil alone. Commonly used in aromatherapy, essential oil blends can be diffused into the air, applied topically, or added to bath products. Popular combinations include lavender and peppermint for relaxation and focus, or eucalyptus and tea tree for respiratory support. Proper dilution and usage are essential for safety.