I am 54.. I have a couple free things you could try to look younger.
Throw your shoulders back when you walk. Look in the mirror; stick your chest out a little and really make sure your shoulders are back. I have noticed a lot of bikers have bad posture.
Put a spring in your step.
The wrinkles i have (and believe me, girl, i have 'em) i feel like i earned them.
What counts to me is that I can ride a bike up a hill with the 20 year olds. Okay, i might not be as fast as they are, but I can then compare myself to most women my age, and I look YOUNG!