Keep her away from sugar and processed food. Get her to make all meals at home using just good quality raw ingredients. Keep stress away from her (that adds Grey hairs and wrinkles the fastest). Continue to look at her and go after her like you're a teenager, that makes her feel young so she will look young. Make sure she gets to go to exercise classes and spas. These are what I do so I recommend them. My wife is in her 40s but always gets mistaken for being in her 20s.