Had a heavily oxidized paint on a 1990 Mustang GT. I went over with the orange pad and C4 multiple times. Multiple meaning three times it looked a whole lot better but you could still see swirl marks from before I would like to see something more aggressive so I wouldn’t have to work so hard or so many times to get everything back to the way it should be

2025-05-09

I couldn’t believe how easy C4 is to work with. I tried it on my work vehicle which is in pretty bad shape in the paint dept. When I got through with it, I almost didn’t recognize my own car

2025-05-07

Worked as described. Easy to apply and wipe off. Removed all the swirl marks on my paint. Will buy again. Hard to really see it in the pics but did a great job

2025-04-29

Good product, removes all light scratches and swirls. Will leave it looking smooth before final product

2025-11-14

Product removed a majority of the imperfections and more than expected. Will continue using on the rest of car.

2025-05-09

Very impressed 👏 The before and after is crazy .

2025-03-19

Tried severl other polishes to get out swirl marks. The C4 worked better than anything I've tried and with very little effort.

2025-10-08

Cut correction worked perfect on light imperfections.

2025-09-19

Worked just like I thought it would. Clayed the car first the the c4 The orbital polisher worked great

2025-07-28

Worked just like I thought it would. Clayed the car first the the c4 The orbital polisher worked great

2025-07-28

Even though I had to move to the v series for my initial work, this compound works very well as a next step after the V32

2025-07-27

I understand that this is a correction compound. I wish it was a bit more aggressive. Especially since it’s marketed at the first stage of a three stage process.

2025-06-20

Takes out all the fine spiderweb type imperfections and smooths the paint perfectly.

2025-05-27

Great products!! Easy to use and results are excellent!!

2025-05-24

I ordered this because my car was not smooth with I was wiping my car it helped but not what I thought how mush it’s going to make it smooth and shiny, wish I order deferent product the one it’s make for little rough surfaces

2025-04-29

Really brought back the paint on a neglected 14 year old truck. Used the InSynchro V45 polish after and it looked/felt like a brand new truck. Also used an orbital polisher. Truck is white-definitely helps but was super happy with results. More than I had hoped for

2025-04-16

Had a bunch of scratches on my car was able to remove them, obviously not major scratches but minor ones little ones here and There this product is a must for anyone who is detailing or just want to get those scratches out

2025-04-06

This product did not remove even the most minor of imperfections. In fact, it may have made them worse. And the fact that Chemical Guys only accepts returns of fully packaged, unopened items tells you they don't stand by their products. Do yourself a favor and find another brand.

2025-03-13

Needed this to complete my Chemical Guys products. Can’t beat the quality of the products and the customer service is a big W!🤙🏼

2025-02-18

I bought this as a kit with the TORQ X Random Orbital Polisher and the P4. I just used this today on my Escalade and only had time to use this C4. My Escalade is black and it's already like a mirror. I'm going to put the P4 tomorrow, but it's so shiny already with the C4.

2025-02-04