The phrase "itchy scalp" refers to feeling a strong desire to scratch or rub the skin on your head because it feels uncomfortable or irritated. Full definition
Alternatively, you can add it to your shampoo if you suffer from a dry itchy scalp. (geekwrapped.com)
Parents who have used this product have discovered that children with sensitive skin tend to get a dry, itchy scalp after using this shampoo. (mymilkybaby.com)
The first time I used this shampoo, I was amazed at how soft my hair felt afterwards and best of all, there was no burning, itchy scalp afterwards! (odylique.com)