We are going to use the healing brush to remove blemishes as it pulls information from the surrounding area we are altering and blends it to make the transition smooth and unnoticeable.
To make things more effective, we need the right kind of brush. Too hard and it will show. I normally use a hardness and spacing of 10%, the diameter will change as you work so there is not a set size for this. You can experiment with these settings, these are just what I find most effective.
To really remove blemishes well, you must zoom right in on the area that you wish to "clean" and work with a small brush, this will result in changes that even his lovely mother wouldn't notice!
First place the brush over an area of skin that is similar to that which you wish to change. Make sure it is a largish area with no blemishes, lines or other effects as these will be transferred, blended and noticeable in the result. If the area has small pores this is great and will make the effect even more natural.
When you have placed the brush over a suitable area, press the ALT key and left click on the mouse, this selects that area as a benchmark and will use it for all healing until you do that process again. Now you can start to play. Place the brush over the scar, scratch or blemish and start to "paint" over it whilst keeping the left mouse button pressed.
All the time you are "healing" you will see a marker cross which indicates where you are pulling the healing information from. You will notice that it moves as you move the mouse. Be careful not to let it run over an area that is different to your selected patch, otherwise it will show in the result.
When you release the left mouse button, you should see that the blemish has gone…magic! Have a play at this point and see where errors can be made. Don't go too mad with the alterations, it is easy to get carried away when you first discover this tool. Make it look natural.
While you are zoomed in close, press the space bar and move the mouse around the image to remove all other blemishes, remembering to select a new area close to that which you wish to change each time. Your end result should be a nice, clean image with unnoticeable results. A portrait to be proud of.