The main material of sex dolls is TPE or silicone, which are very soft materials, but the plastic material is porous, which allows the skin of the doll to fully absorb the moisture and keep the feel and look, but it is also easy to get stains. For example, when we dress our bestrealdoll.com/collections/us-warehouse in dark-colored or tight-fitting clothes, over time the paint on the coat will penetrate the doll's skin, leaving a very distracting appearance.