David Mallet Hair Serum : I was lucky enough to see a sample of this come across my desk recently. I immediately opened it (because what is patience?) and fell in love with it after running the first pump through my mid-lengths and ends. The silky oil sinks into my strands without making them look greasy or weighed-down the way others are wont to do. My fine, thin hair literally drinks it up, and now I can't imagine ever going without it. It's that good.