I've been using coconut oil* to treat Finn's cradle cap, and it has been working very well. Just rub it in, let it set a while, and then gently scrape away the nastiness.
The bonus is that every time I sniff him, I feel like I am on vacation on a tropical island!All I need to do is add a little rum and I'll be all set! ha!
* virgin Coconut oil can be found at Trader Joe's.