One of the most common things you will have to do when retouching is removing various marks and blemishes on skin. Sometimes, this is as straightforward as running an automatic tool over a small area, but for larger, less uniform blemishes, you need some more advanced techniques. This excellent video tutorial will show you how to remove a variety of marks in Photoshop while still retaining skin texture.
Coming to you from Aaron Nace with Phlearn, this great video tutorial will show you how to remove a variety of marks on skin, such as bruises, clothing marks, cuts, and more. For small blemishes, such as a pimple, you can often use an automatic tool like the Spot Healing Brush, but as you will see in the video, for larger marks, such as a big bruise or a tan line, you may need to take a bit more manual control. If you have not seen frequency separation used before, the beauty of it is that it separates detail (like skin texture) from broader properties like color, allowing you to do things like correct the color of a bruise without losing the skin texture on top of it. Check out the video above for the full rundown from Nace.