Considerations
It's important to keep in mind that the type of restoration necessary for your doll depends upon the type of doll that you would like to repair. Different techniques need to be used that are specific to bisque, porcelain, composition, hard plastic and felt dolls.
Function
You can opt to send your doll out to a business that specializes in doll repair, or take it to a restoration business in your area. Make sure that the employees working on your doll have a sufficient amount of experience; you wouldn't want your doll to be damaged any further during the restoration process.
Warning
It's possible to find tips on how to repair vintage dolls on your own. However, if you are in doubt about whether or not you would compromise the integrity of the doll by repairing it on your own, it's best to take your valuable antique to a professional.