Craddle Cap Progressing into 4th Grade

My son had craddle cap as an infant.  I treated it with baby oil and scrapping with a comb.  As a toddler it never went away.  Took him to a dermatologist who just suggested dandruff shampoos.  They never worked. 

This is still happening at age 9.  He has three bad spots that get really bad and the hair gets matted onto the scalp and it looks like a layer of skin or 'crud' is growing over the first 1/4 inch of hair near the roots.

Every couple months I take some glycerine and let it soak in his scalp and then take a fine tooth comb and start scraping away until it loosens and I can scrape it out.  This can be pretty painful for him and often leaves his scalp raw.

Is there any home remedy I can apply to stop this?  I am at my wits end.

Laurie

Have you tried a really good scalp massage every time you wash his hair? Scrub gently with your fingernails.

Ya I have when I use to bathe him myself.  But now that he's getting older and more 'mature', he doesn't want me seeing him naked and washing him.  I imagine his shampooing technique isn't as good as mine was.  I do remind him he needs to scrub and use his fingernails to prevent the build up from coming back.

I know this is an old post, but I thought I would comment anyway, to see if I can help.