Perfumes are made up of a blend of different aromas that usually come from essential oils. Perfume formulations can be expressed in volumetric or weight proportions of each of its components. Perfumes today are being made and used in different ways than in previous centuries. Perfumes are being manufactured more and more frequently with synthetic chemicals rather than natural oils. Many natural and man-made materials have been used to make perfume to apply to the skin and clothing, to put in cleaners and cosmetics, or to scent the air. For people who want to make perfumes at home, weight measures present a problem since the average kitchen balance does not have the required precision. Using them will lead to unpredictable and non-reproducible results. Buying a more precise balance represents an added cost which is hard to justify for the present purpose.There are major fragrance categories - Floral, Oriental, Floriental, Chypre, Green Marine and Fruit.

Perfume is made from about 78% to 95% of specially denatured ethyl alcohol and a remainder of essential oils. Perfume is the costliest form of fragrance with 22% of essential oils. Perfume then came into widespread use among the monarchy. France's King Louis XIV used it so much that he was called the perfume king. Some plants, such as lily of the valley, do not produce oils naturally. In fact, only about 2,000 of the 250,000 known flowering plant species contain these essential oils. Therefore, synthetic chemicals must be used to re-create the smells of non-oily substances. Some perfume ingredients are animal products. Typical plant products include anise, bay leaf, bergamot, cardamom, cedar wood, eucalyptus, frankincense, gardenia, geranium, iris, jasmine, lavender, lemon, lilac, lily, lily of the valley, magnolia, moss, neroli, orange, orris, patchouli, pine, raspberry, rose, sage, sandalwood, tuberose, vanilla, violet and ylang-ylang.

Perfume is often sold in the run up to Christmas as a coffret set at a good price. Aromatherapy-smelling oils and fragrances to cure physical and emotional problems-is being revived to help balance hormonal and body energy. Animal substances are often used as fixatives that enable perfume to evaporate slowly and emit odors longer. Other fixatives include coal tar, mosses, resins, or synthetic chemicals. Alcohol and sometimes water are used to dilute ingredients in perfumes. The theory behind aromatherapy states that using essential oils helps bolster the immune system when inhaled or applied topically. Smelling sweet smells also affects one's mood and can be used as a form of psychotherapy. Humans, like other mammals, release pheromones to attract the opposite sex. New perfumes are being created to duplicate the effect of pheromones and stimulate sexual arousal receptors in the brain.