All About Hyaluronic Acid (from The Beauty Brains)

This is interesting and useful. I have a couple of products that contain hyaluronic acid, and I really like them (like the Paula's Choice serum that I reviewed a while back). I like finding a breakdown of how "miracle" ingredients really work and then being able to decide for myself if they're worth the hype. I knew hyaluronic acid was a humectant, but not much else. I have had problems with products that are high in glycerin (another humectant) actually drying out my skin in winter (the Neutrogena hand lotion, for example), but I haven't noticed that with hyaluronic acid, and I used the serum mentioned above all winter. Overall, it seems like a effective ingredient with some promising science behind it.