Itchy scalp also can be what is called Seborrheic dermatitis which is a common skin disorder that mainly affects your scalp, causing scaly, itchy, red skin and stubborn dandruff.We suggest focusing on improving the health of your scalp first.
Itchy skin is an uncomfortable, irritating sensation that can make scratching irresistible. Itchy skin can have hundreds of possible causes. Itchy skin may be the result of a rash, chemicals in a product that you use or another condition, such as psoriasis or dermatitis. Or itchy skin may be a symptom of an internal disease, such as liver disease or kidney failure. Though itchy, your skin may appear normal. Or it may be accompanied by redness, rough skin, bumps or blisters.
Drinking more water and juice can help. But a dry itchy scalp can be caused by many things such as shampoo, water, laundry detergent, fungus, dandruff to name a few.
You could try a home remedy- after shampooing your hair rinse, then apply apple cider vinegar to your scalp and wait a few minutes then rinse out, follow with conditioner if needed.
Also olive oil is a great moisturizer for your scalp. Just use a very small amount.
Please look at the Calming Scalp Shampoo / Itchy Scalp Shampoo, Vinegar Rinse Cleanser Calming Scalp / Vinegar Rinse Cleaner Itchy Scalp and Scalp Anti-Bacterial Formula / Scalp Fungus Treatment in the itchy scalp product line.
Here are links to them-
https://justnutritive.com/Itchy/vinegar-rinse-cleanser-scalp-relief/