With no accurate means of comparison, the typical circumcised man does not know what he is missing. A man, colorblind from birth and thinking his sight is normal, might also never question his condition. However, as a man ages, he loses sensitivity of the penis. Many men have difficulty achieving sufficient stimulation to reach orgasm. The foreskin is a definite asset in maintaining this sensitivity. Foreskin restoration is a logical process of returning the penis to as close to its original condition as possible. However, it can be frustrating, time-consuming and care must be taken not to use undue force.