Will tear trough filler affect facial expressions?

For unique cases where a variety of modalities could be used to treat the condition, I would suggest an in person or virtual consultation to develop a custom and effective treatment plan. It is difficult to precisely define the best option without collecting the same information. I suggest reaching out to an expert for a consultation with surgical and non-surgical methods to get a comprehensive option. Best, Dr. Emer.

You can have swelling and stiffness with expressions if you have too much product injected or if it is injected too superficially. Proper correction should not affect facial movement after the initial swelling goes away (2-4 weeks). This may take more or less than a full syringe. Please go to a practice that does a high volume of tear trough injections, and look at before and after photos. You can dissolve filler if you do not like it, but if you get way too much filler, it could damage the delicate eyelid skin and lead to permanent swelling or skin wrinkling. 

Properly injected tear trough filler should not have any affect on your facial expressions. In experienced hands, this is a safe and effective treatment. 

Fillers  in the tear trough area should not affect your facial expressions.When done well. it will enhance your look and make you look less tired.
Firstly, you need to see an oculopalstic surgeon to see if that is indeed the treatment you need.You may need surgery for your undereye bags, or you may need fillers.

Tear trough filler can lessen the appearance of eye bags and properly done will not dampen facial expressions or look awkward when you smile. Hyaluronic acid filler will naturally break down over time, just like your body's own natural hyaluronic acid. In the under eye area, hyaluronic acid filler can last several years, so make sure you choose a provider experienced in treating this area. Use of heating pads on the eyes may cause the filler to break down quicker. Hope this helps. Best, Dr. Tkatch