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This will remove any tangles or knots from the hair before misting and styling them. When picking out a brush match it to the doll's hair. For example, if your doll has straight hair use the normal brush. But if it has wavy hair use the pick, both sold in-store and online at American Girl. Curly doll hair should be handled with extreme care. Separate tangles carefully with the pick so it doesn't get damaged. This will calm the stray pieces and keep it down. Be sure to brush the hair after a few mists and not drench them. Bottles made for especially their hair are sold again at American Girl. To reduce tangles, you can mix a small amount of conditioner into the water. Don't make it thick at all or it might clog your bottle. With these items you can style the doll's hair. These styles can range from simple ponytails to complicated pullback flipped braids. Again, these styles vary from what hair your doll comes with.  To make buns on a doll with textured, curly hair, divide in half and pull each half through a hairband, but only part of the way. This will loop the hair in the back and make two buns.

Summary:
Lightly brush out the doll's hair. Get a spray bottle and lightly mist the hair. Collect items such as hair ties and hair clips to keep for the doll.