1) First remove the piercing object.
2) Rotate the wheel so that the hole is facing down.
3) Shake the spray then screw it onto the valve and empty it as much as possible (until it is empty or the foam starts to come out through the valve because the tyre is full. )
4) The foam will spread in the tyre and come out through the hole, closing it up.
5) Ride a few miles at low speed to make sure that the product is properly distributed in the tyre.
6) Monitor tyre pressure regularly before going to a repair shop within 24 to 48 hours after the puncture. Beyond , the chemical solution may damage your rim and tyre.
7) Go to the garage to repair the tyre permanently.