For Relieves Dandruff Scaling & Itching, GTKIT Shampoo contains active ingredient Ketoconazole, the most effective drug against P. ovale – the causative organism of Dandruff. Most of the anti-dandruff shampoo work by normalizing the pH of scalp and thereby fungi of the scalp is not properly controlled. The most effective option is to eradicate organism directly by using anti- fungal shampoo like GTKIT.