Realistic skin on sex dolls results from careful material science and manufacturing choices. Most dolls use silicone or thermoplastic elastomer (TPE), each with distinct properties. Silicone skin tends to feel crisp, resilient, and less porous, offering curvature and edge retention that hold under light wear. TPE skin is softer and more stretchy, with a warmer, more pliable feel but often requires more maintenance to prevent surface heightening and staining. Underneath the surface lie multi-layer constructions: a base substrate for structure, a pigmented top layer for color and texture, and sometimes a secondary translucent layer to mimic depth and moisture. Texture fidelity—pore patterns, microlines, and subtle shading—helps achieve realism but must be balanced with cleanability and durability. Production choices like edging, flow lines, and how the skin ages under UV exposure or contact with oils influence long-term appearance. Realism isn’t only about material; finish, tone matching, and careful lighting in photos contribute to believable results. Proper care—gentle cleaning, avoidance of harsh chemicals, and protective storage—preserves surface integrity. Understanding these science-based aspects helps owners set reasonable expectations and maintain their dolls with informed, respectful care.