Because we only use the best, Adam's Polishes Ceramic Coating here at Polish-It Garage, our coating is strong. Adam's new 9H formula is one of the hardest ceramics on the market. However, when it comes to clear bra and ceramics you have to remember both are serving two different purposes. Clear Bra typically goes in high-impact areas of the vehicle and acts as a self-healing rubber-like bearer against rock chips and other light road debris. If you have just a ceramic coating on the high-impact areas of your vehicle, a rock chipping the paint at 70 mph is completely possible. For the best combination, we suggest doing a paint correction on the areas you would like clear bra, apply clear bra, then ceramic coat over the entire area. You will now have the best of both worlds. Note - a clear bra cannot be placed over a ceramic coating - it will not allow the clear bra to properly adhere.