Please note that the Film Candy Presets only store the adjustment settings that are used by each preset, and therefore the effect may be cumulative, as each preset uses different adjustments. So for example, if you apply “Icing sugar” and then apply “Marshmallow” the effect will be a combination of the two as only the Adjustments that the second preset uses will be applied.
The best method of working with the presets when trying a number of different presets on an image in succession is to either reset, or undo between applying different looks. Because of the broad range of looks included with Film Candy, each preset uses a different set of adjustments to achieve its look, and so it has been designed to only store the adjustments that each one uses so that individual presets don’t override adjustments you may have made yourself unnecessarily. You can also combine looks for different effects by not resetting between each application.