Yes, you can use Protar-K Solution to treat itchiness and roughness of the scalp if these symptoms are caused by conditions such as dandruff or seborrheic dermatitis. It contains ketoconazole, an antifungal medicine that helps reduce the growth of Malassezia yeast, which can cause scalp itching, inflammation, and flaking. It also contains coal tar, which helps reduce excessive scaling and loosen thick flakes on the scalp. However, scalp itching and roughness can have different causes, such as dryness, allergies, psoriasis, or infections, and Protar-K Solution may not be suitable for every scalp condition. It is best to use this solution only if it has been prescribed by a doctor or after confirming the cause of your symptoms.