I apply this onto damp hair, after each time I wash my hair. I’ve been using this bottle for about 4 months, and I still have more than 3/4 of the bottle left! So this will definitely last you quite a while. I’ve been applying this onto my ends and from about the ears down. I find that this keeps my hair fairly frizz-free, soft, and manageable…
http://www.beyondblush.com/2012/11/elin-bianco-treatment-serum.html