munpeng, maybe u can try applying glaze? coz glaze's seem to fill swirl marks pretty well. but like cclems said, after few washes, all ur effort down the drain edi. then u have to do it all over again :)
anyways, how bad is the swirl marks on ur car bro? maybe u could share a pic with us.
anyways, how bad is the swirl marks on ur car bro? maybe u could share a pic with us.