Your bathroom has never been this clean. A candle is all you need!
Regular cleaning of your bathroom tiles should keep them nice and white, but as a super-effective preventative measure against dirt or mold build up, simply use a white candle as a water repellant.
Press the bottom edge into the grout and rub the candle back and forth. After just a couple seconds, you'll notice it working.
Focus on areas where the tiles most frequently come into contact with water. The wax creates a protective film. Afterwards, you'll never have to deal with dirty grout lines again. Brilliant!
Here is quick video explaining how it works:
This simple trick will prevent grime and mold from ever developing in the first place. Why can't it always be this simple?