5 Star Designs Claimed

Yes and no. Clean up after using your countertop and you will have no problems. 5 Star Designs seals all concrete countertops with a very high grade concrete sealer. The major stain offender is mustard. If you don't clean up within 24 hoursmustard can leave a light blemish, which can be repaired.

Concrete is a very unique material with very unique characteristics. There are two possibilities regarding cracks in concrete. If your countertop was fabricated by an unqualified fabricator, you could get structural cracks. These are the type of cracks you see in sidewalks, etc.
The other type of cracking are very thin surface cracks, which are not common, but can happen. Surface cracks have nothing do with the structure or integrity of the countertop. Actually, some people like the added characteristic to their concrete countertop. Granite can also have this type of cracking which are called fissures.

Not if your concrete countertop is sealed by 5 Star Designs.

Absolutely! Besides water, concrete is the most used substance in the world. It has been the pillar of construction for thousands of years.