SONAX

SONAX is a German family-owned company that's been making car care products since 1950. In Europe, they're one of the dominant professional brands; in the US, they're known primarily for their Wheel Cleaner Full Effect (the purple color-change formula) and their paint correction line.

German engineering shows in the formulation quality — SONAX products tend to be more chemically aggressive (in a good way) than their American counterparts, delivering professional results that consumer-grade US brands can't match.