Color change formula delivers the same strong bond as our Instant Krazy Glue but it goes on purple.Color change formula delivers the same strong bond as instant Krazy Glue but it goes on purple where applied so it"s easy to see and work with-- then dries completely clear. The one-drop applicator is convenient for general household repairs on wood, rubber, glass, metal, plastic and ceramic. The airtight, leak-proof cap keeps glue from drying out. A handy base holds the tube for easy application.