Perfume

       Nowadays,perfumes are widely used by men and women in their daily life.Perfume has been used for century to cover the body odor and build up their self-esteem and personality.
       
       Basically,perfume contain a vast variety of chemicals which called notes.Most of the perfume are engineered to have a head note,a heart note and a base note.

Head Note

Perceived immediately upon application of a perfume, head notes consist of small, light molecules that evaporate quickly. They form a person's initial impression of a perfume and thus are very important in the selling of the product. The scents of this note class are usually described as "fresh," "assertive" or "sharp." The compounds that contribute to top notes are strong in scent, very volatile, and evaporate quickly. Citrus and ginger scents are common head notes,also known as top note.

Heart Note

The heart note compounds form the main body of a perfume and emerge in the middle of the perfume's dispersion process. They serve to mask the often unpleasant initial impression of base notes, which become more pleasant with time. Not surprisingly, the scent of heart note compounds is usually more mellow and "rounded." Scents from this note class appear anywhere from two minutes to one hour after the application of a perfume.Lavender and rose scents are typical heart notes. They are also called the "middle notes".

Base Note

Base notes bring depth and solidity to a perfume. Compounds of this class are often the fixatives used to hold and boost the strength of the lighter top and middle notes. Consisting of large, heavy molecules that evaporate slowly, compounds of this class of scents are typically rich and "deep" and are usually not perceived until 30 minutes after the application of the perfume or during the period of perfume dry-down. Some base notes can still be detectable in excess of twenty-four hours after application, particularly the animalic and musk notes.

      A fragrance is to be said consisting of 78%-95% of ethyl alcohol and the rest are some essential oils. Because the oils all evaporate at different rates the perfume may smell different as time goes on.

      There are different type of methods to manufacturing perfume.Some important steps are:

• Maceration/Solvent extraction: The most used and economically important technique for extracting aromatics in the modern perfume industry. Raw materials are submerged in a solvent that can dissolve the desired aromatic compounds.Maceration lasts anywhere from hours to months. Fragrant compounds for woody and fibrous plant materials are often obtained in this manner as are all aromatics from animal sources.Commonly used solvents for maceration/solvent extraction includehexane, and dimethyl ether. The product of this process is called a "concrete."
• Distillation: A common technique for obtaining aromatic compounds from plants, such as orange blossoms and roses. The raw material is heated and the fragrant compound  are re-collected through condensation of the distilled vapor.
  

         Perfumes can be used for different purposes. By using perfume, our will smell amazingly unique, provides ultimate expression of individuality and causing others to take notice of ours unique style and grace.