Aleene’s Crystal Clear Tacky Spray is a super strong, acid free, multipurpose, permanent spray adhesive. Unlike other spray adhesives, this unique formula provides an extremely strong bond once dry, but it also allows you extra time for perfect positioning. Before drying crystal clear, this tacky spray stays wet for about 60 seconds to allow your project to be moved and altered to absolute crafting perfection. Perfect for adhering flat surfaces to flat surfaces like paper, cardboard and light wood.