Treating standard latex balloons with Hi-Float will increase your balloons lifetime from 8-12 hours, to up to 5 days, when inflated with helium.
It takes a few hours after inflation for the HI-FLOAT to dry enough so that it will not splatter if the balloon bursts. Although it is not toxic, wet, splattered HI-FLOAT is sticky and could damage furniture or surfaces such as walls.
HI-FLOAT is designed to work in balloons that are kept indoors in a climate controlled location, with heater or air-conditioner running. HI-FLOAT treated balloons that are kept outdoors, in humid environments or in non-climate-controlled locations may not float for an extended time.