Epoxie sculpt. I get it from van *****. Its made for school kids non tokix and you can work it with water. Its pretty cheap but ive been condimed here for suggesting stuff thats out of most peoples price range. I get the two quarts, probley used a 1/4 or less on this. the trick is to get the solvent and wet ur hands anytime you work with the stuff. Cut ur wrinkles just like sculpting with wed(water clay). Smooth with brush like wed only with the solvent. sets in about 6-8 houirs but I work new layers in 1/2 hr or so and you can paint it before it sets up. Hell you can drill it, tap it, what ever. If you havent tried it you should.... although its different and if you like water clay you might wanna try the epoxie clay. But both are the same... keep your hands wet and have fun.