ZRINKLEâ„¢ is a clinically proven botanical instant smoothing tensor that provides lift and firming to skin. It is based on a natural extract of the cork oak (Quercus suber), which contains the active ingredient suberin. The tightening effect of ZRINKLEâ„¢ is provided by the hydrolyzed suberin, which creates a visible effect on the skin. Due to the suberin content, ZRINKLEâ„¢ forms a microcrystalline network that will bind to the skin surface and progressively tighten the skin.