Essences come in different forms for various purposes. Essential oils are pure and concentrated, and they have therapeutic benefits for the body, mind, and soul. Aromatherapy is a popular use for essential oils, and some can be applied topically on the skin or diffused in the air. Flavor essences are used in the food industry to add flavor to cakes, pastries, candies, and drinks. The flavor of some foods, such as vanilla ice cream, comes entirely from essence. Fragrance essences, also known as perfumes or colognes, are used to enhance one's aroma. Different fragrances are designed for different moods and occasions.