I had my treatment done last wednesday in Cardiff and promised to make note here... I tested the product my way today, I wanted to see how well it would stand up to the humidity claims....really damp, drizzly, horrid day today which is basically my hair nightmare. I walked the children the mile to school without using an umbrella or hood and my hair has not turned into a frizzy crazy mess as it would usually have done, instead it has stayed in it's sleek ponytail and looks as it did when i stepped out. I was a little sceptical before, but very impressed now.