Balloon Shine
Balloon shine makes balloons look good for longer especially when working outdoors on hot days. I use Gemar Balloon Shine for most of my outdoor work because it’s super easy to apply and works great on dark colours:

For indoor work I use either "Hi Shine" or "Koda Crystal". These take longer to apply but avoid the risk of slippery floors. The "Hi Shine" requires gloves but the bottle has a better spray handle than the


My concern with the indoor sprays is that they can make the balloons sticky. Balloons that stick together will burst when they expand & contract in different weather conditions. I feel the Gemar Spray is more like an oily coating and so works better when the balloons move against each other. Both options have advantages and disadvantages but the most important thing is safety and a slippery floor has to be avoided at all costs.
The below is an example of the Hi Shine used indoors:

For the below PRIDE letters I sprayed the balloons outside and brought the letters inside "pre shined":
