Tim Faber asked:

The causes of scalp itch range from excessive dryness, profuse sweating, climate change, and fungus to poor oil production.

The primary cause of inflammation and resulting irritation is fungus or bacteria that have become trapped in follicle pores.  Mixed with sebum (oil), yeast can form clogging pores leading to infection.  Chemical treatments and harsh hair products can leave the scalp and hair dry or inflamed leading to itchiness as well as bumps or sores.

High humidity and sweating caused by exercise or strenuous work can further complicate and increase symptoms.  Likewise, low oil production from the sebaceous glands dry-out the skin and can cause flakes that clog and enlarge follicle pores.

The best remedy for scalp itch is a two-part solution.

If itchiness is a result of dryness, then using a shampoo that provides deep moisture to the skin and hair is the best recommendation.  Products with Panthenol, naturally-derived Jojoba Oil and Emu Oil are your best bet.  These active ingredients have been proven to hydrate and soothe irritated skin.  Emu Oil is a natural anti-inflammatory and anti-bacterial and is commonly used in Anti-Fungal Shampoos and in products to increase moisture.

If, on the other hand, scalp itch is due to bacteria from excessive oiliness, sweating, or oily hair, use a shampoo formulated with Zinc PCA.  Zinc naturally regulates oil production and helps irrigate pores of dirt and bacteria that causes itching.  Again, products that compliment Zinc PCA, such as Fenugreek, Ivy and botanical extracts help promote circulation, provide topical nutrients, and soothe itching, clear flakes, and improve scalp health.

The best remedies for scalp itch provide help and rapid relief, while soothing, calming and clearing bacteria and fungus.