OK thanks I'll grab some vitamin E and give that a try!
I don't think it's a thyroid issue. She is definitely not hypothyroid as she is lean and energetic. Don't think she is hyperthyroid as her heartrate is normal and her coat is really healthy, she just has the dry skin. We're seeing the vet tomorrow morning so I'll mention it to him and see if he thinks we should do a T3 and T4 level, although when we were there last he said he didn't see anything as an issue. And she is not hard to put/keep weight on. It's worth mentioning though! My vet is pretty on top of things and we've been seeing him for about 6 years so I trust him. Thanks!