Use it all the time[on a black Audi S3].No ill-effects.
Just spray it on and use a single wipe with a terry towelling cloth.Don't rub it in.
Buff off with microfibre cloth for best results.
Works on paint,plastic,even glass.
Obviously best on lightly soiled surfaces,but a bit of dirt doesn't hurt.
Been using it for several years.[Meguiars]
Cheers
Len
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