The material Daynès uses is silicone — specifically, the medical-grade silicone used for prosthetics and special effects work.

Silicone can be tinted, textured, and detailed in ways that clay or resin cannot match.

Individual hairs — inserted one at a time — achieve a naturalness that wigs or painted-on hair cannot.

The surface of the silicone can be treated to reproduce the way skin behaves differently over bone versus cartilage versus fat — the slight translucency where skin is thin over a bony prominence, the softness where subcutaneous fat underlies the surface.

Glass eyes of specific color and character complete the effect.