I had one at Centerparks (in Wiltshire) last year in the Aquasana spa. I did it for a treat but I am not sure if I would recommend it. It cost about �90 and they say you need a course of about 5 for the benefit to be permanent. They did one side of my face and then let me look at my face in the mirror and one side was a lot less saggy than the other side - but I was lying down at the time and I suspect the result disappear as soon as you get up and start walking around. It did, however, make me feel somewhat luminous for a few days.