Knowledge Base RealDoll Construction How RealDolls are fabricated and detailed. What is the Face-X system? Are there any interchangeable features on RealDolls? What is the lifespan of silicone? Will it crack? Do I need to worry about dry rot or anything like that? What are the properties of silicone? What should I be aware of? Could I be allergic to it? Does the silicone flesh have an odor or flavor? What are RealDolls made of? Can my doll change facial expressions or blink? How are doll sizes measured? Are there any known health risks? How difficult is it to keep my RealDoll in a sanitary condition? Can I get a doll with no seam lines? What are the pubic hair patches made from? Can I get hair patches (pubic or otherwise) to put on the doll myself? What are the differences between the RealDoll magnetic and full head style faces?