Este artículo también está disponible en Español: Como envejecer un retrato.
There are countless articles available on Internet, explaining how to retouch a portrait and make somebody look younger; basically, what they do is soften the skin and remove wrinkles and other skin defects. In this article I will explain the method I employ to produce exactly the opposite result: aging a portrait. This process enhances the contrast of a photo and highlights the textures; but when applied to a portrait, the effect is that of aging the 'victim'.