We put in a lot of efforts to make sure that our skin is well-moisturized but tend to forget the layer of skin underneath the hair. A person with dry skin will most likely have a dry scalp too. Having dry skin is the most common cause of an itchy and flaking scalp. Scalp oil moisturizes the scalp better than creams or lotions as it stays longer on the scalp. Jojoba oil is the most commonly used scalp oil, and other options include almond, flax seed or olive oil. Apply the scalp oil onto wet hair,as it prevents oil from getting into hair. Also, choose a shampoo with citrus oil, tea tree oil or chamomile oil as it rinses out oil treatment effectively.