Usage examples (13)

• Manganese dioxide is used to: manufacture ferroalloys; manufacture dry cell batteries (it's a depolarizer); to "decolorize" glass; to prepare some chemicals, like oxygen...
• Saliva contains an enzyme that will decolorize blood and remove fresh bloodstains.
• The chlorine and oxygen will combine their action to decolorize the textile material.
• Import it into Photoshop, or similar, then decolorize it, turn up the contrast and lightness accordingly.