Aging takes time, even when you make it happen artificially with software. Each candidate took about four hours of retouching. To mimic the ravages of time, the PopPhoto artists did the following:

- Used the Burn and Dodge tools to deepen wrinkles and paint in age spots.
- Cloned the eyebrows and moved them lower.
- Used the Liquify filter to hollow out cheeks, make jowls, thin out lips, and enlarge ears and noses.
- For Clinton and Obama, brought in forehead wrinkles from separate photos and used the Match Color tool to blend them in.
- For Obama, painted in gray hair on top of his current hair; for Clinton, desaturated with the Sponge tool to make her grayer.

See the photos here