When do boys begin to produce smegma? My son will be six weeks old tomorrow, and within the last week or so I have occasionally noticed a white subtance on the tip of his foreskin. I've been wiping it off, but I'm not sure if I should because it doesn't come off that easily. I am assuming it's normal - but if it is smegma, do I need to clean it off or just leave it? (I am not retracting at ALL, just wiping the end) Or do they not even produce smegma yet, and this must be something else?