Disclosed is a spongy rubber body or, in particular, spongy silicone rubber body useful for forming the semiconductive rubber layer of a rubber roller in photocopying machines and the like as well as for use as a spongy rubber puff in cosmetic makeup. Characteristically, the inventive spongy rubber is compounded with, besides ordinary ingredients in spongy silicone rubbers, a specified amount of globular particles of, preferably, a silicone rubber having a specified average particle diameter. Compounding of globular particles in a spongy rubber has an effect to give a uniformized and decreased average cell diameter of the spongy rubber and also to greatly decrease the permanent compression set of the spongy rubber as required in the rubber layer of a spongy rubber roller. Cosmetic puffs can be imparted with improved touch feeling to the human skin and improved evenness in spreading of a cosmetic composition over the skin.