Review on 🧴 P21S Gel Refill 1000ml by Nicholas Erickson

I had heavy dirt from brake dust on the front rims of my Mercedes GL. P21 worked great. I put it on and left it for 2 hours. Then I sprayed the rims with water, then took a sponge and wiped the wheels, then sprayed again. Things just fall off. (I would wear dishwashing gloves or some kind of plastic gloves because the brake dirt takes ages to get off your hands.) Of course it's a newer car, I don't know of any cars that have had this dirt hardened over the years. . But P21 makes amazing products. Just remember that nothing is free. Sometimes you have to put some grease on something to clean it properly. In my opinion, the P21 requires very little effort.