Fragrance oils are synthetic or natural compounds used to create pleasant scents in various products. They are commonly found in items like candles, soaps, perfumes, and cosmetics. Unlike essential oils, which are derived from plants, fragrance oils can be formulated to mimic specific scents or create unique blends. These oils are often used in the beauty and personal care industry due to their versatility and long-lasting aroma. Fragrance oils can be customized to suit different preferences, making them popular for both commercial and DIY projects. They are typically safe for skin use when properly diluted and formulated.