Hello
The best treatments on the market at the moment is Senscience Moisture Intense, Moroccan Oil Hydrator, Joico Deep Penetrating treatment and on a more affordable note you can try mixing avocado with olive oil and leaving it on your hair for 15 mins. This will, over time, help to restore moisture through a very natural source and it will save you quite a lot.
Try having a colour shampoo done to mask some of the damage and then let your hair breathe from all chemical treatments until it is in a better condition. It is also a good idea to invest in a good trim from time to time to get rid of the current split ends caused by all the bleaching.