The problem isn't getting moisture into the hair, it's KEEPING it in. Any leave-in conditioner will soften the hair, but the problem is that the processed hair is so porous that after a couple of days it feels like straw. And if you use the wrong shampoo it will only exacerbate the problem.

I have a solution in the pipeline but it's still on its final revisions so it will be at least a few weeks before it's 100% ready.