I like this serum and used it for years.  Until I discovered that there was a much less expensive option with almost exactly the same ingredients.  Got2B Shine Serum is $5 and works just as well, if not better, than this Paul Mitchell serum.  I apply a small amount to clean damp hair and work it through the midlengths and ends.  Then, without adding any more product, I smooth the top of my head, but avoiding the roots.  Got2B controls frizz, provides thermal protection and adds tons of shine.  After styling, I take a single drop and work it my palms and smooth it over my waves and touch up the ends.  This gives me additional shine and softness.  I used Paul Mitchell serum for a long time because it was one of the only silicone serums on the market at the time.  However, since then, there have been competing products in every price range.  One day I was in the drugstore and compared the ingredients of PM and Got2B and discovered they were almost identical.  So I saved my money and purchased Got2bB (which is made by Schwartzkopf) and have never looked back.  I've been using Got2B for years and it works perfectly.  It's an excellent heat shield and the shine is to die for.  So if you want to save money and are a smart shopper, buy Got2B instead.  Super Skinny Serum is excellent, but Got2B is the same damn thing!!