What are the dolls in Persona made of?

Early dolls were made from clay and then fired at high temperatures, you can check out Rosemary's Maiden for that, it's an older technique. And dolls are fragile

Most modern dolls are made of clay, and then molded with resin, Cui Cui should know SD, BJD it.

Flipping a mold is very costly, the small dolls in the dollmaker should be resin molded. The larger ones should be clay or plastic, because the cost of remodeling is also very high. Modern human figure masters are using clay as a prototype, the more famous Japanese master Yoshida, recognized as a better clay is LADOLL clay.

BJD dolls with very good resin, which is the reason that there are legends that such dolls are made of baby skin, which shows the high skill of the dollmaker polishing