Retraction Paste Capsule Refill, 25/PkgAstringent Retraction Paste is specifically designed to facilitate gingival retraction works. Each tip administers 15% aluminum chloride paste into the sulcus prior the making of dental impressions. The microhybrid paste is specifically manufactured for Class I and II restorations and has a fast curing time of as short as 20 seconds. Astringent Retraction Paste is designed for posterior use and has low polymerization shrinkage.