Calling all hairstylists/barbers: what would you recommend for a VERY dry scalp? I was told by one stylist that I don't have dandruff, just a very itchy, dry scalp. Oh... and it flakes. I thought that was the very definition of dandruff. But hey... what do I know? I need a moisturizer that will last more than a day and actually moisturize my scalp without making it greasy since my hair is naturally oily. Suggestions?