How to treat sunken eyes? Can they be fixed naturally without fillers?

Hi Tarushi,
I think this a great question.  I think you will need to figure out what your original weight was prior to the hollow eyes.  If you were to regain the weight back to when your eyes were not hollow, then your eyes should naturally become less hollow as the fat around the eye regains volume.
In the title, I mentioned eyelash enhancing treatments such as Latisse, and other other the counter eyelash treatments with the same side effect profile, such as darkening of the skin around the eyes, change in color of the iris, irritation, etc.  These eyelash enhancers are prostaglandin analogue medications and can cause localized fat loss around the eyes, which can hollow the eyes with only a few weeks to months of treatment. 
If you happen to be on the eyelash enhancers, if you stop them, there is a good chance that in 6-10 weeks of stopping the treatment the fat around your eyes could regenerate naturally to give back the soft fullness that people who don't have hollow eyes have.
Hope that makes sense.  
Best,
Dr. Yang
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Thank you for your question. Fillers like Belotero, Volbella, and Restylane Silk are good for improving under the eyes, but keep in mind that a combination approach will give the most improvement. My patients try to get non-surgical treatments to avoid surgery, so we use fillers, lasers, microneedling/PRP and stem cells. I suggest consulting with an expert to develop a treatment plan best suited for you. Best, Dr. Emer

Volume loss can happen for many reasons including age, weight loss, and genetics.  There are no creams or oils that will replace lost volume.  Fillers do a nice job of disguising under eye irregularities.  The treatment is performed in the office and the results can last up to one year.  See an expert injector in your area to learn more.