From the manufacturer: 

Make-Up International's superb Face to Face matte Eyetoners give excellent eye definition & maintain their clarity in all lighting conditions (inddors or out), making their durability & staying power superior to many commercial products.

The eyetoners have been formulated to be multi-purpose. They can be applied dry or with a slightly damp brush for a more intense colour. Excellent for high fashion make-up & strong eyeliner.