Oh this makes me pause.
It depends on what your hair needs. IME, steaming gets more water into your hair quickly. If your hair is dehydrated and thirsty (and probably low po), this is good. It did nothing to help deep conditioner penetrate. In fact, my conditioner just rolled off, and didn’t seem to get in at all with steaming. I started alternating between the streamer with no product, and dry heat with a conditioner. But ultimately it was just an extra unnecessary step for me, because I don’t have an issue with getting water into my strands without the steamer.