Step One: Gather blue koolaid a parfume sample bottle and a pair of scissors. You can find free parfume samples at various department and makeup stores. Koolaid you can find at wal-mart for a dollar either already bottled or you can make it yourself with a pitcher of water and a koolaid packet. If not buy NEON food coloring.

Step Two: Gently rub of the writing on your bottle using the sharp side of you're scissors be careful not to cut yourself! It should come off really easy and take only a minute or so. After all the words have been rubbed off empty the contents of your bottle and clean it inside and out.

Third and final step: If you've purchased koolaid dump it into the bottle and WHA LA! Zydrate! If you've purchased food coloring (remember you want the food coloring that says NEON on the box) take out the lightest blue and give it a VERY gentle squeeze you want just barely a drop of coloring. Pour in water put on the cap shake it up and WHA LA! Zydrate! P.S. if you want your 'Z' to glow then find some clear glow in the dark nail polish at any makeup store or section. You might even have better luck finding it online.