The method offered here: mudjacking
Mudjacking uses a pumped cement-based mixture beneath suitable settled concrete. The assessment considers the slab, support, intended movement and surrounding components.
Understanding foam without advertising it
Polyurethane lifting uses an expanding polymer material and is a different approach. Foam and branded PolyLevel systems are not currently offered by Randy through this site. They are discussed only to help homeowners compare options and ask useful questions.
Let the property guide the decision
No material makes every slab a repair candidate. Surface condition, access, buried components and the reason for movement remain important. A structural or drainage issue may need a different professional assessment.