I have had this problem, too - plus I have lost about a third of my hair (general, overall thinning) due to methotrexate. I am not much of a "girly-girl" or a "spa lady" type, but I have always had long hair I was a little vain about - it's usually been glossy and soft - no more! :-(
I have tried all sorts of products - what is working best for me is to use a decent moisturizing shampoo and conditioner (the "Herbal Essences Hello Hydration" brand works well and is not ridiculously expensive - sometimes Costco even has it), but when I use conditioner, I add about half to 3/4 of a Tablespoon of "Organix Moroccan Oil Penetrating Oil" to it (http://www.amazon.com/Organix-Morocc...ccan+argan+oil). (I have long hair so you might need less if you have short hair).
The shampoo/conditioner and also the oil should all be available at a drugstore - none of them are fancy hair-salon things.
I mix the oil in with the conditioner in my hand and then use it as I normally would, after I shampoo - then I rinse it out, etc just like normal. That extra bit of oil seems to be just exactly what my hair needs - it comes out glossy and soft, and the breakage seems to be less.
I won't say it's as nice as it used to be, but using that oil stuff in the conditioner is the best thing I have tried so far, and I have tried a zillion different products, LOL.
I hope that helps. It's bad enough having this stuff - we don't need to be bald on top of it!!!! :-P