The Footlogix Callus Off formula is for professional use only. Spray in the treatment and wait 1 minute. Then paddle as the callus softens and begins to dissolve. This product reduces the vigorous paddle work. There is a small size and refill. The new formula for home care is a milder version foam that is safe for the client to use as maintenance in between pedicures when they suffer from extreme callus or cannot get to the salon often enough. The home care foot paddle is also advised to retail for them to use to get results and keep hygiene at home.