Fragrantica is a website that provides information on fragrances, including notes, product details, positive and negative reviews, and ingredients or materials. Fragrance notes are categorized into different groups such as citrus smells, flowers, spices, woods and mosses, musk, amber, animalic smells, and more. The website also provides reviews of perfumes and colognes, as well as news and articles related to the fragrance industry. In terms of ingredients, fragrances can contain both natural and synthetic components. For example, the molecule that gives a rose its odor is made up of more than 300 components, many of which are potential allergens for many people. Some of these components are responsible for the characteristic indole aroma, a smell that refers to feces and putrefaction. This specific molecule can intensify the density and depth of the scent of roses, but in the natural realm, it cannot be tamed. Synthetic fragrances can be made to mimic natural scents, and some synthetic ingredients, such as Iso E Super, have become popular in perfumery. Green notes are also popular in perfumery and can include ingredients such as galbanum, violet leaf, and tomato leaf. While some fragrance notes represent actual ingredients, others are more descriptive, such as powdery or earthy.