Since I’m getting questions about retouch and color correction I would like to clarify what is the difference between these two things. The best way is to show before-after images.
As you can see color corrections affect only colors and sometimes it might be enough for a picture. For images with imperfections such as peeling skin, acne, blemishes the color correction is just not enough because it is not working on a skin texture itself. The color correction will not make the skin look smoother and cleaner. The retouch is more powerful because it consists of different methods and provides a better result.
Images in social media are very small and most of the time the impact of retouch is not truly visible in that scale. Please keep it in mind. Images below illustrate this effect.