What is Olaplex (and where can I buy authentic Olaplex from?)

I recently did this facebook live, over on the salon's facebook page and it generated a lot of questions and feedback. So I decided to share it here too. If you're curious what Olaplex does, and whether you should be adding it to your next appointment, I hope you find it useful!

I've since spoke to Olaplex in the UK, to help us work out who was an authorised seller of Olaplex no. 3 (which is the at-home product) if you can't get to us. I can now confirm that Look Fantastic is an authorised seller, and this will be authentic Olapex. Ordering from others sources (Amazon, Ebay and others are not authorised, and may well not be original and authentic).