Tools & Technique: Skin editing (frequency separation), background & spot removal (spot healing), shape manipulation (liquify), lighting (dodge & burn), colour correction (hue/saturation & adjustment layers), added noise

For interactive results: click an image, then scroll through for a dramatic change.

These images (from left to right) are unretouched, to retouched; with added colour grading treatments created in Camera Raw and Photoshop. 

Each image was firstly cleaned up using multiple techniques, from the background to skin and hair. Then, lighting and colour was manipulated to create different looks.

In this particular shot, the model was given a subtle eye lift, as well as small corrections of the hairline and facial imperfections