Fragrances come in many forms and one of the most important things to understand is how concentrated the scent is. The strength of the blend influences how strong it smells, how long it lasts, perfume subscription service and even the optimal number of sprays. Multiple tiers of scent intensity exist, each with its own distinct traits and perfect occasions.

At the lowest end is eau de cologne. This type has the smallest percentage of aromatic compounds, usually between 2 to 5 percent. It is delicate and invigorating, often used in the summer or for a refreshing burst. Because it is so diluted, it doesn't last long on the skin, typically fading within 1 to 3 hours. It is perfect if you want something subtle and not overpowering.

The next tier is eau de toilette. Which contains a 5%-15% concentration of fragrance extracts.