Tired of looking at that yellowed, mouldy, old sealant but put off by the thought of replacing it? Re-new is the easiest way possible! Apply new, fresh, smooth sealant directly over old sealant. Minimal skills needed, done in minutes, for use in your bathroom or kitchen.The new improved auto-smooth nozzle allows you to easily apply directly over old sealant for a perfect finish without the need for any other tools. It can help you quickly rejuvenate dirty, cracked sealant faster than before for a perfectly smooth and clean result.Clean the surfaces before applying. Treat mouldy sealant with bleach/mould cleaner then allow to dry thoroughly. Place the nozzle on sealant with UniBond logo facing you, tilt to ensure a tight seal between the wall/bath, shower, or sink, lightly squeeze and push the bottle forward, keeping the nozzle at the same angle. Clean excess product with tissue during application. For a perfect finish, repeat step without squeezing.80ml white bathroom/kitchen silicone sealant. Allow at least 6 hours to dry before using the shower.