Thanks for your this question!
Just the Goods doesn't make a product specifically for dry scalp, but the following rangle of products may be helpful: https://justthegoods.net/search?q=dry+itchy+scalp
Beyond this, I would like to suggest trying either a moisturizing shampoo *and* conditioner. Alternatively -- or in addition -- you may like to try coconut oil applied as a scalp mask once a week (or twice a month) before washing/conditioning as some find this helpful 😊