I was lucky enough to get a sample of this with a purchase before it was even in the shop. I fell in love in just a few days and you can bet I emailed Birchbox support when I couldnt find it for sale! So glad it is finally here. This stuff is heaven for my hair, it has never been so smooth, soft, manageable and shiny without being weighed down. You only need a little bit though, too much and it your hair will get icky. If you have poor results the first time try it again with half as much! The one ounce sample lasted me about 2 weeks (My hair is about 6 inches past my shoulders) with washing every other day.