Have you looked at the ingredients in dandruff shampoo? It seems like they contain almost everything in the Toxic Ingredients You Must Avoid list. Better to try something natural first before resorting to chemicals. Many people swear by rubbing aloe vera gel onto the scalp (leave it on for 20 minutes than rinse it out). This will certainly help with dry, itchy scalp. Another remedy is a rinse with apple cider vinegar. Try these remedies a few times before deciding if they work for you. Even dandruff shampoo requires regular use to see results, so give the natural stuff a chance!