I live in the Arctic Midwest and when we bought the house the front sidewalk is stamp concrete. The concrete is in great shape not a crack in it. The problem is instead of mixing the color in the concrete its more of a top coat in is maybe half inch in if that. This may or maybe not added to if fading and turning white. The previous owners i found used some cheap stuff from a box store year after year and made it worse. I hired a company before I got into the DIY thing about 2 years ago and the guy tried a chemical stripper in a spot , came back in a couple days and it looked great. They spent relentless hours using that chemical and power-washing and the old sealer came of like candle wax. When it was all said and done it looked like brand new for about a month which he was honest and said this might not work. It really makes the house look like shit and I hate to take it out but its ugly unless wet from rain. I have seen now Box stores Like HD now advertises deck and concrete stain but I cant imagine that holding up. Anyone have any ideas at all. The color is a deepish red/tan i don't know, but as i said it really distracts from houses appeal and I would like to do something about it. Also if faces to the south wish doesn't help. There were two patios in the back (facing North) he did same thing too and its been two years and there fine.