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Dipropylene glycol is a compound that plays a role in the chemical makeup of most fragrances. It is used to bind and carry the fragrance elements of a perfume, usually one or more essential oils or fragrance oils.


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Dipropylene glycol is a type of organic chemical compound that is frequently used as solvent . It comes in two grades, dipropylene glycol (industrial grade) and dipropylene glycol (fragrance grade). Only the fragrance grade is appropriate for use in perfumes.


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Dipropylene glycol, fragrance grade, is used as a solvent due to the fact that it is odorless, colorless and has a high boiling point and a low toxicity. Not only can it act as a carrier, it is also a diluent, or a compound used to dilute the strength of fragrance oils.


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This compound can be used both by home fragrance makers and commercial fragrance makers. Dipropylene glycol can bind and carry both essential oils and fragrance oils (blended essential oils).


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The compound works in perfumes due its ability to help attaching to the fragrance molecules and making them slower to disperse. The strength of a perfume can be changed by raising or lowering the ratio of dipropylene glycol in the formula.


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The basic ratio for perfume is three essential oils to seven parts dipropylene glycol, fragrance grade. They are shaken together in a non-reactive container and emptied into a UV-resistant bottle such as amber.