<qa>  What is the cause of the accumulation of reactive oxygen species in the cochlea?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. 