Limp hair can get weighed down fast, which is why most women with fine hair typically steer clear from products — aside from the occasional volumizers and possibly hair spray. And the thought of using a leave-in conditioning treatment? Forget it. These heavy-duty hydrators are often simply too intense for fine-haired folk. Thanks to Nexxus Hydra-Light Weightless Moisture Leave-in Conditioning Foam ($15 at drugstores), though, that's about to change. This foaming product easily absorbs into fine hair, protecting already-fragile strands from styling without leaving hair greasy or making it fall flat. So now hair that could use a little lift can also enjoy some long-lasting nourishment, too.