diy spray for kitty dandruff?

I was wondering if anyone has ever make a spray or mist for a cat with dandruff?

My cat has pretty bad dandruff but honestly I think it bothers me more then her. I don't see her scratching any more then normal (based on cats I've had in the past). In fact I don't think I would have noticed if it wasn't for all the white flakes on her grey fur. Still I figure it can't be that comfortable. I'm pretty sure that it's coming from living in a dry climate (I've had two other cats with the same thing in the past, though oddly enough it always seems to happen to my grey kitties), but I'll ask the vet next time I take her in. I've heard of adding coconut oil to their food, and also of using a store bought mist, but I haven't been able to find any diy mists. Sadie (the cat in question) doesn't like being brushed in general so maybe this could help? I think she doesn't like being brushed because it overstimulates her, but maybe it's because of the dry skin? Thank you for any ideas you guys have. 

Dry skin can be directly related to diet.  I'd look into her diet and see about adding some Omega-3s such as Wellactin and see if that helps.  Most of my cats love coconut oil and I give it to them as a treat.  Switching to a high quality grain-free canned food will help immensely.

I use coconut oil for my Great Dane's dandruff and it's done wonders.  My cats never seem to have an issue, but they eat better than she does...for some reason, Mimsy can't handle raw food very well and so she eats grain-free kibble, but there's significantly less of those good Omega 3s and 6s in a kibble.  So she gets coconut oil to help with coat quality and dandruff.

In my experience, if you can't brush kitty to help distribute the natural skin oils, try frequent pet sessions and adding something like salmon oil to the food.  I feel like salmon oil is more suited to cats than coconut.  Especially if you're feeding primarily kibble.

Re: the mist, I don't know how much help that would be.  As above poster says, dandruff is usually not a topical-only issue, but indicative of something missing in a diet.

hmm, well right now I feed her friskies (the classic pate) mixed with a bit of water since I'm trying to get her to drink more water at night while having a small bowl of lams dry food for her to free feed. I know it's not the best food out there, but I was told that this type of wet food is the best one for cats in it's price range. I wish I had the money for the higher priced and better food, but honestly even the human members of our family doesn't eat the highest quality food.

That being said, I could mix in salmon oil (I love that idea, I never would have thought of it) to the friskies. Is there anything else I should mix in to help her?

While on the topic, I have thought of making food for her myself, but I've always assumed that would cost a lot,  does anyone know about how much that would cost?

Look into the Fancy Feast classic pates.  They are grain free.