Cholesterol (Water Soluble) is a chemically modified, aqueous-soluble formulation of cholesterol that is experimentally utilized for investigating the specific effects of cholesterol enrichment or depletion on the biophysical properties and functional characteristics of potassium currents in inner hair cells (IHCs), given that cholesterol is an essential component of the plasma membrane that regulates the activity and kinetics of ion channels embedded within the lipid bilayer.