I have two cars that this product can help. One has superficial cracks that are lighter than the original skin, while the other has cracks that are darker than the original color. This product works great in lighter cracks and not at all in darker cracks. In fact, this is stated in the instructions on the tin, but unfortunately I was not able to understand this before purchasing the product. I'm keeping the jar but am now looking for another product to get rid of darker stains.