Caution - Use with gloves!
Sole separation may occur in extremely hot weather. We suggest stuffing the shoe with a sandwich bag filled with ice to avoid separation.
Apply a light coat of Sole Bright to Oxidized parts of soles and leave in UV light in order to remove oxidation.
Make sure to apply very lightly around edges to avoid running.
Cover in clear wrap to activate product and to prevent product from drying out.
Leave in sun for a 1-6 hours, depending on how yellow, and check on periodically.
Try to place shoe as level as possible to avoid leaking of product in hot weathered areas.
Multiple sessions will be necessary for extremely yellowed soles/material.
Don't be fooled by other products that say you can get a sole clear in one session that is heavily yellowed.
Excelent 
