Change color when clean (When the foam turns white, just wipe and rinse to reveal a brilliant shine. Cleans with a fresh scent and no hard scrubbing!). With the power of Oxi Clean Stain Fighters. Sprays on blue. Turns white when clean (When the foam turns white, just wipe and rinse to reveal a brilliant shine. Cleans with a fresh scent and no hard scrubbing!). Sink. Tub. Shower. Kaboom Foam-Tastic takes the guesswork out of cleaning! Spray on the penetrating blue foam, and OxiClean Stain Fighters go to work on contact, breaking up soap scum and hard water slains. Removes: Soap scum, dirt, hard water stains, calcium, lime, grease and grime. Deodorizes: With a fresh, clean scent. Use on: Tubs, glazed ceramic tile, fiberglass, shower doors and vind curtains, sinks, counter tops and chrome fixtures. Certified Renewable Energy. Green-E: Made with 100% certified renewable electricity. No CFCs: Contains no CFCs which deplete the ozone layer. Federal regulations prohibit CFC propellants in aerosols.