Faint swirl marks

[DGW67]

Hi

I have some faint swirl marks on the bonnet of my 996. I guess these are a result of washing but I have always used Auto Glym products and the car is rarely dirty for long periods however it is a dark blue colour and these show up.

So, two things, firstly what is the best product to get rid of these and secondly how do I avoid them in the future?

Cheers

Dave

[DGW67]

Thanks for the info everyone, very useful. Dave