A very modest investment of your time and money are all that are required. One 8oz. jar of REFRESHEN Microdermabrasion Cream will typically last most people twelve weeks or more. This is plenty of time and plenty of daily microdermabrasion treatments to see for yourself if it will make the difference you desire. Usually three to four treatments is sufficient to tell. You may want to purchase a premium moisturizer like REFRESHEN brand to maximize your results.