Essential oils are concentrated extracts taken from the leaves, flowers, stems, and roots of plants. They capture the plant's natural fragrance and beneficial properties, making them popular in aromatherapy, cosmetics, and natural remedies. Each oil has unique characteristics and potential health benefits, such as promoting relaxation or boosting mood. These oils can be used in various ways, including diffusing them into the air, applying them topically when diluted, or adding them to bath products. However, it's important to use them safely, as some essential oils can cause skin irritation or allergic reactions if not used properly.