Pay attention to the notes
Every perfume contains different notes which decide the overall scent. These notes consist of three different layers called base, top or head, and middle or heart notes, and they all work together to create a specific smell. Some perfumes, for example would be considered floral and contain different scent notes like rose, gardenia, or geranium. Others may be a bit fruitier, with undertones of citrus or apple. Exotic perfumes contain spicy notes like star anise or even cinnamon. You can learn more about the different notes used to make cologne and perfume in order to get a better idea of which ones you think will suit your tastes.
Pick a concentration
Fragrances come in four different levels of concentration. As the concentration gets higher, the price usually gets higher as well. Typically, colognes or perfumes with high concentration have a more powerful scent and last longer. The highest concentration is simply called perfume or parfum which lasts an entire day .The next lower level is eau de parfum, which typically can last about six hours after application. The third level is called eau de toilette . It typically requires more than one application throughout the day to get it to last. The fourth and lowest fragrance concentration is eau de cologne, which only lasts about two hours.
Thus, these two factors play a key role in determining the scent of your perfume. But it should also be noted that while trying out various samples of perfumes, a skin test is the most important as our skin itself has certain hormones and pheromones can can slightly change the fragrance of a certain perfume.