Possible Clues:

• Street-art medium
• It supplies one's needs at the press of a button
• Deodorant choice
• Option for a graffiti artist
• Spray a painful back with oil? Not I
• Can, under pressure, be back in Oslo – so real
• Spray producer
• Spray paint can
• Look pained, turning round after a spray
• Type of dispenser detrimental to the ozone layer