I had some problems with smegma
myself but it is pretty easy to clean off. I was doing it like this;
I retract my foreskin and soak my penis in warm
(not hot!) water. I am soaking my penis there for maybe 5 minutes (you can also
try soapy water, but soap can irritate the sensitive penis like mine so I avoid
this and you be careful!).
This always helps soften
the smegma. Then I rinse the smegma off. Sometimes it doesn’t get all of it at
once, but that's okay. I was doing this every day and it took only week or so
to get rid of it. But if you want things to go a bit faster you can try to
gently rub off the smegma with your finger. But you should do this slowly and
without too much pressure since glans could be ultra-sensitive. If the bare
finger is too much, you can try using a warm wet cloth or hand towel.
I hope that this was helpful