Yeah, she shouldn’t be too difficult!

You’ll need a fine toothed comb, some fabric softener or even just human conditioner, some dish soap, and hot to boiling water.

Wash the hair in whatever state it’s in and then give it a good coating of the conditioner/fabric softener. Let it sit for a while to soak up. It’s hard to say how long you should leave it without knowing what kind of fiber the doll hair has and that sort of thing but like 20 minutes half an hour, that’s probably good. I don’t think I’ve ever had the problem where it sat too long so, better just to sit and ignore it for a while than to go to quickly.

Once that’s done, don’t remove the softening product. Instead, use it to help you comb through the tangles. Go in small sections. Start from the tips work toward the scalp. This can be either the most tedious part or the most enjoyable part depending on your personality I guess, haha. I use by now a duplicate of the flea comb I bought for my cat years ago, because I end up dealing with doll hair frequently but if you’re just looking to fix this one doll you can do a perfectly serviceable job with a human comb haha

Eventually you’ll get something that looks and feels pretty smooth, but you may have some ratty frizzy ends. At this point pouring the very hot water over the doll’s hair can help with smoothing those and the rest of it. Yours doesn’t appear bad enough to need several trips through that process. I like to pour mine in the general direction that I wish gravity to take the hair. If you leave the doll dangling over the sink with her hair hanging vertically while she’s horizontal, the hair will kind of want to go straight backwards when she’s dry also. You’ll get a prettier result pouring the way you want things to go.

Let her dry overnight or over the whole day if you do this in the morning, and you should be able to give her a good comb and have hair again.

You can do other steps like using a very low temperature flat iron while the hair is wet if you’ve got frizz at the end that just will not be tamed by the rest of this process. And that does mean some very satisfyingly straight hair, but depending on your level of hair mess and goal with this (giving to child to mess up again? Collect?) and whether or not you have a flat iron lying around this isn’t like hardcore necessary to having hair that looks like hair again.

There are also many other people on the internet who spend more time with doll hair than I do you can provide other magical tips and tricks if something gets really hairy!