Pull the Bald Cap with some tension over the back of the head, whilst pulling the sides forward. This ensures it fits neatly and is tensioned appropriately. Fold it open again, allow to dry for 15 seconds and then close the Bald Cap for the last time.
Note: you finish the edges using cotton buds with acetone. You need 15 to 20 cotton buds for this, because the acetone dissolves the plastic. Don't dip used cotton buds back in the acetone.
Take a cotton bud with acetone and make a small hole on the forehead, in the middle of the adhesive edge.
