Styles is a powerful tool available in Capture One PRO and Capture One DB (currently only available on Mac) that lets you combine multiple image setting in order to create a certain "look".
Capture One comes with a wide range of predefined styles e.g. cross processing or porcelain pastel. These are easily applied to existing images or can be applied while capturing tethered to the computer. If you apply styles during capture you can adjust light, reflectors and exposure in order to make the image even more unique.
Creating your own styles is easy. Play around with the image adjustment tools in Capture One PRO and once you are satisfied you can save all settings or some of the settings as part of your own personal style. All saved styles will appear automatically in the style drop-down dialogue and can be reused at any time.