There is no need to use additives to clean your ski goggles. Just clean your ski goggles with a lot of clean water. Then shake your lenses to make water drop off your lenses. If necessary, you can also dab your lenses. Finally let your goggles air-dry.
You can use ski goggle cleaning solution or regular eyeglass cleaner spray. You can easily find them from a sporting goods store or online stores. Don't use paper towel or crude fibre cloth to clean your goggles otherwise you may scratch the lenses.
To clean ski goggles, you just need Eyeglass cleaning cloth which should be hyperfibre and goggles cleaning solution. Don't use Kleenex, paper towels or regular rags which may scratch the surface of the lens or leave a residue. Don't use cleaning agent containing ammonia may ruin the anti-fog properties of your goggles.
The usual ski goggle cleaning solution or regular eyeglass cleaner spray would make sense to clean your ski goggles. Further, they are easy and available to figure out from a sporting goods store or online stores. Leave alone the paper towel or crude fiber cloth, or your ski goggles would be scratched.