We've spent weeks learning how to turn back the clock with Louise Redknapp and Anna Richardson, but tonight How Not To Get Old finally comes to an end. In this final episode Anna will be heading off to test out a new non-surgical treatment that promises to banish the circles underneath her eyes (It's not like she really has that many in fairness). Meanwhile Louise is meeting up with a group of people who think you can achieve a more youthful look without resorting to such methods. Face yoga is a thing. No, really.