Preheat oven to 350 degrees.
In the bowl of a mixer, beat the butter, sugar, and vanilla until creamy.
With the mixer running, sprinkle in the sea salt and guar gum.
Add the remaining flour and beat thoroughly to mix. Dough will take a bit to come together and will look like crumbs, but as the butter warms, it blends.
Refrigerate dough to firm up, 10-20 minutes (this will depend on the temperature of your butter when you started).