Alien Xenomorph face paint is based off the creature design by H.R. Giger used in the Alien movie franchise.
To start, a bald cap was applied using Telesis 5 Silicone Adhesive. Skin Illustrator in Black was then applied as a base color. Then Green Marble Sealer sprayed over the entire area. Once that was completed, Aquacolor 32B by Kryolan was used to lightly sketch out the forms of the design.
Finally, Black and White Skin Illustrator color was used in multiple mixtures of grays to create dimension. White was also used to airbrush large areas and brighten certain spots.
The entire look took two and half hours to complete.