 Cisplatin causes an accumulation of reactive oxygen species ROS in the cochlea, triggering damage to the outer hair cells of the organ of Corti. Sulfur-containing antioxidants can neutralize ROS following Cisplatin intoxication, and thus represent a potential preventive measure. A few sulfur-containing molecules have been studied. Experimental and human studies have shown that sodium thiosulfate STS can protect against Cisplatin-induced ototoxicity. However, when administered through the blood stream, STS interfere with Cisplatin treatment efficacy. To counter the ototoxic effects of Cisplatin treatment without impairing its efficacy, a local pharmacology approach directly aiming at the cochlea, would represent a powerful clinical strategy. 