I have my doubts about whether you have anything wrong with you at all, or whether for some reason you are just paying closer attention to your scrotum. The scrotum is supposed to be wrinkled and reddish, and may look more so depending on how warm you are, etc. Before you run around in circles trying different creams, I suggest you try doing nothing for a month or so and not look at your scrotum. If you're still concerned at that point, show the doctor again.
Do you have any email address?I would like you to see some of the pictures I have taken. Please let me know if this is possible.