Can you use expired guar gum?

Using expired guar gum is generally not recommended, as its effectiveness can diminish over time. While it may not pose a health risk if ingested, the thickening and stabilizing properties may not perform as expected. If the expired guar gum shows no signs of spoilage, such as off smells or unusual texture, it might still be usable for non-critical applications, but always best to test a small amount first. For optimal results, it's advisable to use fresh ingredients.