Great question!
Normally when detailing a car you would do a few or all of the below steps,
- Wash and dry
- Clay the surface if needed
- Clean the surface and/or remove below surface defects
- Polish the surface to a high gloss
- Seal the surface with either a wax or a paint sealant
For the 3rd step if you had swirls and scratches, you would use the Wolfgang Total Swirl Remover
If the paint is in pretty good shape then could skip the swirl remover and just prep the paint with either the Wolfgang Paintwork Polish Enhancer or you could use the Finishing Glaze.
The Total Swirl Remover and Finishing Glaze are often referred to as the Wolfgang Twins because they compliment one another and are most often used with a Dual Action Polisher to restore a show car shine to neglected paint.
The Paintwork Polish Enhancer tends to appeal to people that want to work by hand but it too can be used with a DA Polisher.