This can cause irritation, and if not cleaned sufficiently, an obvious infection. A noticeable increase occurs during adolescence, with its great acceleration of penis growth. The adult stage follows with its period of maximal sexual activity. Sexual intercourse becomes a regular feature of life and the function of smegma for lubrication assumes its full value. It is my understanding that all circumcisions do not end the production of smegma.
Women also produce smegma, quite a bit more than men actually.
Smegma is not dirt. Smegma is a combination of natural glans lubrication and discarded cells. The production of smegma is part of the process of cellular regeneration. It is natural and healthy. Freshly formed smegma, washed away regularly and constantly replenishing itself, is a wholesome lubricant - making for ease in erection and smoothness in sexual intercourse.