Simoniz Big red Heavy Duty Compound is one of the best compound cleaners that I have used, it is great at removing deep scratches and swirl marks. It is also ideal for bringing back that deep gloss from paint. Big red is not needed for all vehicles, but for those hard spots and neglected vehicles big red is a great first step to bringing back the showroom shine. Simoniz Big Red is very thick and a little bit goes a long ways, it is capable of removing blemishes from paint overspray and from other vehicles that may have scratched on your surface, and it can also help in the process of headlight restoration. This is a product that needs to be added to all professional detailer’s tool belt.