Aveda Smooth Infusion Style-Prep Smoother is supposed to make hair shinier and smoother, but does nothing for my hair. At a local Aveda store, a stylist recommended it when I said that I wanted my fine, stick-straight hair to have no fly-aways and to have that smooth, shiny, polished look. The stylist stated that it helps give a smooth blow-out even when its humid outside. The problem-as far as I can tell the Smooth Infusion Style-Prep Smoother does nothing. I honestly notice no change in my hair when I use it. It doesn't look shinier or smoother-it looks exactly the same. It's not softer either. It doesn't appear to weigh down my hair or leave my hair flat though. I also found out that Smooth Infusion Style-Prep Smoother does not protect your hair against heat damage caused by thermal products. I was surprised by this-this means I need to use another product when blow-drying. Overall, this product just does nothing. If you have straight hair, stay away.