This is how I have put a stop to my annoyingly dry & irritated skin
Daily a multivitamin once a day (make sure it contains B vitamins)
Drink plenty of water. I tend to look at the colour of my wee to see if i'm hydrated or not.
Use purechimp super body cream
Increased omega 3 in my diet. You could always use a supplement.
Purchased a humidifier for my bedroom.