I've been comparing multiple shampoos and conditioners for fine hair lately, and this one is the winner! It smells good and leaves my hair feeling softer, more manageable, and not at all weighed down. I think the added volume comes from how light and clean my hair feels, but I otherwise didn't notice a major change in volume. I'm still very pleased with this product and the shampoo. I've decided to buy it despite it being more expensive, because it works much better than the other highly recommended brands I've tried recently.