Editing Portraits and Recomposing Images - Beginning Photo Retouching and Restoration Using GIMP - page 213

Figure 8-33. Touching up the curls using the Burn and Blur tools
14. Add a minimum amount of noise to the Studio Background (Image Menu ➤
Filters ➤ Noise ➤ RGB Noise).
Use the lowest setting, with the Independent RGB option unchecked.
This method of replacing the background preserves all but the finest hairs. (I used a difficult subject
here; most hair will be a little easier to handle.) The result is a portrait that looks like it was taken in a studio
(Figure 8-34 ).