Why does your velveeta cheese appear to have crystals on it?

The crystals you see on Velveeta cheese are likely due to the formation of calcium lactate, which can occur when the cheese is stored for a long time or exposed to changes in temperature. These crystals are harmless and a natural byproduct of the cheese aging process. They may also result from moisture loss, which can concentrate certain compounds. While they might affect the texture, they do not indicate spoilage.