Quality silicone skin is central to realism and durability. Begin with color and texture: uniform pigment without blotches or color shifts indicates controlled curing and stable materials. A natural skin texture shows subtle pores and microtextures; overly glossy or plasticky finishes may suggest less refinement. Inspect seams: even, fine seam lines should lie flush with the surface, not lifting or creating ridges that snag clothing or skin.
Elasticity testing is informative. Gently stretch a small area of the skin and observe how it returns to its original shape. High-quality silicone should recover quickly without visible stretching marks or tears. Flex points, like joints or wrists, should demonstrate smooth movement without stiffness or squeaks. Inhale test: a faint, chemical odor can indicate incomplete curing or low-grade materials; a lack of odor generally suggests better processing, though some scent is normal. Check for consistent density by tapping lightly; a hollow feel or patchy density can signal flaws.
Odor, aging, and environment clues matter. Silicone skin should age gracefully with sun exposure and humidity, not crack or peel prematurely. Finally, look for documentation of safe, non-toxic curing agents and skin-safe pigments. While no single test guarantees perfection, a combination of texture, seam quality, elasticity, and certification information will help identify skins that perform well over time.