Less is More
While a mint condition composition doll would surely be a most prized possession, most are going to come with their fair share of wear and tear, and most collectors understand that. The problem with the materials used to make composition dolls is that they absorb oils and waxes, which will alter their appearance. So generally, unless a doll is in super bad shape or really dirty, you shouldn't attempt to restore or clean your doll's appearance. The most you should ever do is use a piece of tightly woven cotton to gently buff the finish.