How do I get rid of loose under eye skin after “botched” tear trough filler? (Photo)

These fillers (belotero, volbella, restylane silk) are good for under the eye, but keep in mind, a combination approach will give the most improvement. Fillers, lasers, and microneedling/PRP can improve under the eyes tightness. My patients try to get non surgical treatments to avoid surgery. We use PRP and stem cells there often. I suggest consulting with an expert to develop a treatment plan best suited for your short and long term goals. Best, Dr. Emer

so sorry that you've had this trouble. we know now that most juvederm products don't belong under they eyes - they end up attracting more fluid, and can easily be overfilled. while hyaluronidase does dissolve the juvederm, it does not damage native hyaluronic acid. what you see now be related to stretching from the juvederm itself or from concurrent aging and sun damage. you might think about chemical peels, laser or radiofrequency techniques to improve the texture of your skin
good luck

Treating the under eye area can be difficult and the use of hyaluronidase can interfere with skin quality, given of course that skin, too, contains hyaluronic acid.
Any treatment that tightens skin and improves skin quality would be recommended; radiofrequency, PRP, fractional resurfacing, peeling or even simple skin care products.  

This is an area I never use fillers due to the sensitivity of the ocular nerve, and its surroundings. I usually do PRP injections coupled with micro-needling. To remove excess skin from the under eye region surgery is the most effective by far. You can dissolve the filler with hyaluronidase but if it has been multiple years than what you are seeing probably is not a hyaluronic acid based filler and needs to be addressed differently. 

I am sorry to hear about your experience with the results from dermal filler in your tear troughs. I would schedule a visit for a consultation with a reputable provider that specializes in cosmetic/aesthetic procedures. There are a few options but it all depends on the skin elasticity and issues around your eyes. Botox could help tighten that area along with a small amount of dermal filler in your cheeks. After the age of 30 we lose collagen at a rapid rate which can cause the areas under our eyes to appear worse and worse as we age. In order to fix your area of concern correctly I would schedule a consult. 
Hope this helps!