Realistic skin in Czech sex dolls blends material science with artful finishing. Most dolls use either silicone elastomer or thermoplastic elastomer (TPE), each with distinct properties. Silicone offers excellent durability, a natural feel, and good heat resistance, but can be stiffer and more expensive. TPE is softer, warmer to the touch, and often more affordable, though less resistant to tearing and oil absorption. Realism comes from multiple skin layers: a base elastomer, a pigment layer for color depth, and a translucent sublayer to mimic how light penetrates real skin. Subsurface scattering—the way light travels beneath the surface—gives a lifelike glow, especially around cheeks and lips. Fine details such as pores, veins, and slight surface texture enhance authenticity, typically painted or airbrushed with meticulous shading. The surface finish matters too; matte coatings reduce shine and prevent a plastic-like look, while gentle gloss on lips or eyes adds realism. Maintenance issues, like oil uptake in TPE or silicone discoloration from sun exposure, influence material choice and care routines. Temperature and humidity can affect flexibility and longevity, so many owners keep dolls in stable environments. Ongoing research in biomimetic pigments and micro-structural textures continues to push realism forward, marrying chemistry with artistry to create skin that reads as truly alive under varied lighting.