Is the fraxel laser good for under eye wrinkles?

Fraxel works for fine lines and wrinkles but  if your wrinkles are right under your lashes they aren't reached by the laser.  These types of wrinkles are best treated by lower eyelid lift.  Lower lid blepharoplasty is a surgery that involves bruising and a week or two of recovery, longer for all of the swelling to down. If surgery isn't for you, continuing to do the Fraxel is fine.  You have a lot of experience with it and should know what to expect.

The more treatments you get the better. Remember, the more aggressive the treatment (ablative CO2 laser is more aggressive than non-ablative lasers) the better the results. If you want almost no downtime it will take many treatments to get the same results as a ablative laser which will have 1-2 weeks of redness and healing.