In the last 6 months, I've detailed 6 different cars with single stage paint. Some of these cars had MODERN single stage paint, this means the paint was Urethane. Some of these cars had old-school single stage paint, this means they were solvent-evaporation single stage paint like lacquer or enamel.
One of these cars was the 1969 GTO that I did Sub-surface glass polishing for the windshield, you can read about this project here,
Removing Windshield Swirls, Scratches & Wiper Marks on a ’69 GTO
For my initial Test Spot on the hood, I used a popular polish that I had previously thought used great abrasive technology. What I found was the product removed the swirls and scratches but left micro-marring in the paint. That is to say, instead of having a clear, deep red shine, the paint now looked cloudy or foggy. I then tested another established brand of polish and obtained the exact same results.
Next I tested the NSP 95 Primer. Like the other 2 products, it removed the swirls and scratches but left a clear, bright red finish.
Next I buffed a portion of the other sections I previously buffed with non-Dr. Beasley's products and to my surprise but also to my relief, the NSP 95 removed all the micro-marring and left zero micro-marring behind.
What this showed me was that the spherical abrasive technology used in the Dr. Beasley's NSP Primers works on both hard paints AND soft paints, better than some products I had previously had a lot of faith in.
FWIW
Mike