It depends on what bar, Pixie. I've used the Rosemary Mint poo bar, and it was very moisturizing, but not enough to go without a leave in. But, my hair was in a different condition when I was using them. It may work even better on my hair now because it's in much better condition. The lather is creamy, as opposed to just foamy, if that makes sense. Because of that, it rinses off leaving the hair soft, but not necessarily moisturized.I've purchased a few of the body bars in the past, but never really thought to use them on my hair.Oh, and I give them 5 stars.
I have been using Ida's bars for a couple of months now, I bought 5 shampoo bars and 3 regular body bars. I love the Summer Sunshine (shampoo) and the Orange Creamsicle (body). Right now, I'm using the Babassu and Marshmallow and I don't like the way it smells or feels for my hair. I also used the body bars for shampoo and to be honest I liked the Orange Creamsicle more than the Babassu Marshmallow Shampoo Bar.
Ok, scratch what I said, Pixie & SweetiePie have forced my hand and made me order some of the body bar samples to try out on my hair...I guess i should try some on my body too since I have dry skin and that's what they are for...lol.ETA: I will review all the bars I try