Fairy will damage your paint over time as it is a strong degreaser, same as Traffic Film Remover will damage your paint. It will also rot your rubber seals, turn your plastic trim grey/brown and dull single stage paints, but on the plus side you're hands will be soft as your face apparently

Jetseal should be ok iirc as they are bodyshop safe and contain no silicone, silicones are evil and will give you fisheyes if not completely removed. Best to let the bodyshop know anyway though

same with any treatments on the paint, some can be funny with paint and will remain even after flatting down
