Hi guys, I have been using this product religiously for 3 years now (thats how long ago I went blonde) and I agree that if you use to much it goes dry, but my hairdresser assures me it is because it has a high protein content and its like if you were to iron egg whites and they go stiff (strange way of putting it I know) but basically if you use products with a lot of protein in it a lot, you will notice when you blowdry/ straighten your hair, it will almost feel like straw.
In saying that, the protein does help restructure your hair, and keep it from snapping, and all you have to do to fix the strawness, is make sure you use the anti-snap on damp hair, and if you intend on drying it, use your heat protection products. This will ensure a nice smooth finish with healthy strong hair.
Hope this helps! 🙂