Eau fraîche is one of the lightest fragrance concentrations, typically containing only around 1-3% perfume oil in a base that’s often mostly water rather than alcohol, while eau de cologne uses a similar low concentration but is alcohol-based, so the two feel different on skin even though both are subtle and short-lived.

What actually sets them apart

Cologne traditionally refers to a specific citrus-forward style that originated in Cologne, Germany, built on an alcohol base with a low concentration of fragrance oil, giving it that classic, sharp, refreshing citrus character. Eau fraîche is defined more by its low concentration and higher water content than by any particular scent family, meaning it can technically come in floral, woody, or citrus styles, it’s simply built to be extremely light and fleeting, closer to a scented splash than a lasting fragrance.

Both are excellent for hot weather or for people who prefer barely-there fragrance, but neither is built for longevity in the way an eau de parfum or perfume oil is. We explain concentration levels properly in our perfume concentrations guide, and the complete guide to perfume covers how these formats fit into the wider picture. Neither format is designed to compete with an eau de parfum on staying power, so treat them as a refreshing layer rather than your main event.