What's the best procedure to get rid of bulging under eye when smiling? (Photo)

You may benefit from a lower blepharoplasty and the fat can be transposed to fill in the hollow areas that you dislike.

Best Wishes,

Gary Horndeski, M.D.

Under-Eye "Puffy Pillows" is a kind Lymphedema (lymphatic obstruction) that has been related to too superficial injection of an HA filler in the thin, delicate tissues under the eyes and/or the use of an inappropriate choice of HA filler for that region. It tends to be a difficult and persistent problem.
I have had gratifying results in treating this using an algorithm of varying combinations, concentrations and amounts of intralesional anti-inflammatory agents. You would be wise to consult with an experienced, board certified cosmetic dermatologist. Best of luck.

You have a thin layer of fat overlying your orbicularis muscles. For now just monitor them. Treatment is premature. Follow up with an experienced oculoplastic surgeon in a couple of years.
Good luck!

Personally, I try to avoid surgical intervention for variables that are due to dynamic facial expression.
I usually make assessments based on static or expression less facial appearance.
Trying to correct something that only occurs during smiling is highly complex and is often difficult or not possible to achieve.
Trying to minimize the bulging or skin redundancy under your eyes when smiling can have a negative impact on how you look when you’re not smiling.
Smiling muscle, lifting your cheek, and this creates redundancy in the midface under the eyes. There’s also usually some contraction of the orbicularis muscle that contributes as well.
Crows feet can be minimized with Botox, but will not impact the skin redundancy from zygomaticus contraction.
Would you describe is typical and normal.
I suggest not having intervention for this, especially surgical irreversible manipulation.
Best,
Mats Hagstrom MD