In real human skin, the epidermis layer (the outer layer of skin) has fingerprints and skin detail; it also contains pigment called melanin. When skin is exposed to the sun, more melanin is created to help counteract the damaging rays of the sun. Likewise, the epidermis of the prosthesis skin layer contains remarkably realistic fingerprints and skin detail along with a simulated melanin. Furthermore, when an amputee wearing our prosthesis gets a tan on their real skin, they are supplied with “prosthetic melanin” in a bottle so the prosthesis can be made to match their new tan. Each user is able to apply this “liquid tan” directly on their prosthesis where it is absorbed immediately into the epidermis layer. The tanning liquid will fade much like a real tan.
Alatheia takes this same attention to detail with the other layers of skin. In real human skin, the layer of skin below the epidermis, known as the dermis, is a translucent mesh of skin cells with little or no pigment, allowing the color from the subcutaneous layer to be seen. The dermis layer is visually identical. And while the deepest human skin layer, the subcutaneous layer, contains blood vessels and subcutaneous fat that creates the final element of skin color, we mimic these hues with a custom painted translucent layer of pigmented silicone.