Coating the Outside of Air-Filled Balloons After Inflation
A diluted ULTRA HI-FLOAT coating may be applied to the outside of the latex balloon after it is inflated to keep it from oxidizing (turning chalky). This is especially useful for clear balloons with items such as stuffed animals placed inside. Treating the outside of an air-filled clear balloon will keep it bright and clear for several weeks if it is cared for properly.
This photo shows a bear in a balloon, with half of the balloon coated with HI-FLOAT and the other half uncoated. The treated half remains clear even after several weeks, while the uncoated half starts turning chalky after a few days.
Warning: Air-filled balloons with an external coating of HI-FLOAT must be kept in a climate-controlled location. Heat and/or high humidity can cause the balloon to burst or deflate prematurely.
This dilute coating method does not work well on helium-filled balloons, since it can cause streaking.
To coat the outside of an air-filled balloon: