i just get sierra glow to my car last 2 months. and yes, i had scratched my car recently...sent to them and they polished the scratch and give the treatment back and now it is just like new...no scratch anymore....even they say, if i had an accident, i change new bumper....they will give FREE treatment for the new bumper as long as within 5 years...to me, it is really worth it...easy maintenance + good after sale service...