Astringent paste for temporary retraction of the marginal gingiva to provide a dry gingival sulcus when the periodontium is healthy prior to, for example, analogue or digital impressions, or cementation of temporary and permanent restorations. Thin cannula with flexible tip allows easy and precise application into the sulcus. Paste consistency varies during application and sulcus widening. Contrast to the gingiva for good visibility. Quick and easy to spray off.