I am one of those unfortunate people who has hypersensitive skin.  I am even allergic to some products that are made specifically for persons with extra sensitive skin.  One problem that I seemed to have developed just in the past few years is that I have reactions to some of the new shampoos out there.  By reaction, I mean intense itching of my scalp that can occur as quickly as 10 minutes after shampooing.  I don't like to spend a lot of money on shampoos and conditioners but I also don't like to walk around scratching my head because I don't want my colleagues to think I have fleas or lice. ...