Treatment for dry skin due to hormonal hair loss

Question
My guinea pig was diagnosed with an ovarian cyst last spring, but due to her being six years old, she is too old to risk spaying. She has had a great amount of hair loss to her abdominal region, thighs, and shoulders over that period of time, and each area has some really dry dandruff covered skin (which I guess is caused by both the cyst and her lack of fur). She even has an ugly dry patch under her neck she does not like me going near and her hair is getting thin around her face from itching.

Since there is no real way for me to have her spayed, my question now is how do I treat the symptoms? Her dry skin is obviously making her very uncomfortable but no matter where I look there are no sites that tell me what to do simply for dry skin without going off into treatments for mites and lice. I've had her seen by the vet twice and I know her condition is not parasite related. I don't want to use human lotion on her because she might ingest it when she grooms, that and it just has "bad idea" written all over it for her skin.

Is there any type of moisturizer you have come across, organic or just medical, that would be safe to use on her skin? I would really like my old lady to be a little more comfortable.

Answer
I would use olive oil. It's got no perfumes and is edible,so if she licks it it's not going to harm her.  Rub some in your hands then rub her wherever her skin is dry. Olive oil doesn't go through the processing that so many of the vegetable oils do, so that's why I prefer it.

You're right, this isn't parasite related. It's the hormonal upset from the ovarian cysts. At this point she deserves to be kept as comfortable as she can, and if it were my faithful old girl I wouldn't hesitate to use olive oil to help keep her from being so dry and uncomfortable.