Frank Yonker, vice president of research and development for Qual Chem, explains that newer carwash soaps work by first removing contaminants that stick to the vehicle’s clear-coat.
Check it out at the link below:
The science behind carwash soaps
As the car care industry developed, every phase of the typical carwash improved and matured. Over the years, sites were upgraded as operators...
https://www.carwash.com/science-behind-carwash-soaps/
Source: carwash.com