The fragrance composition is recreated as precisely as possible. Gas chromatography–mass spectrometry (GC-MS) is often used for this purpose, a scientific method that can identify individual fragrance molecules. This analysis helps perfumers to reproduce the top, heart and base notes of a perfume and achieve a similar olfactory effect.
After the analysis, suitable fragrance materials are selected. Both natural essential oils and synthetic fragrance molecules are used to imitate the scent profile of the original. High-quality designer perfumes often contain rare and expensive raw materials, which are replaced in dupes by more affordable alternatives. This makes it possible to offer similar scent experiences at a significantly lower price.
The fragrance compounds are then blended with alcohol and fixatives to achieve the desired fragrance concentration, for example as an eau de parfum (EdP) or eau de toilette (EdT). After mixing, the perfume goes through a maturation phase that can last several days to weeks. During this time, the fragrance compounds bond optimally and unfold their full effect.
Finally, the dupe is tested several times and compared with the original to ensure that it shows a fragrance development as similar as possible. Although perfume dupes often come very close to the originals, they can differ in longevity, intensity and the exact way they unfold on the skin, as the precise formulas of designer perfumes are kept secret. Nevertheless, they offer an affordable alternative for fragrance lovers who want to enjoy luxurious scents without paying the high price for a designer perfume.