Face drooping/sagging due to chronic illness. Will it bounce back once recovered?

So sorry to hear you have been going through this. We have quite a number of patients who have noticed real facial changes with significant physical and other life stressors. For some, when these stressors resolve, their facial changes improve, but most need some help to return to their previous or improved state.
It is very difficult to give you great advice without seeing you in person or at least pictures. Facial aging (caused by either time or added stressors) is usually a combination of changes in skin quality and volume loss. We treat skin quality with personalized combinations of BBL, Halo fractional resurfacing or if appropriate full field Sciton erbium resurfacing, Skintyte and Prp. Volume is restored in a natural fashion using pictures at a younger age as the perfect guide. Seek out a physician who specializes in non-surgical treatments to best address your concerns.

Hi there-- Unfortunately, I have found that volume loss and thinning of the skin (collagen loss) that happens during illness does not just self-correct if the illness resolves. I would recommend eating a really healthy diet and using a high-quality medical grade skin care regimen, and seek advice from an expert in aesthetics to find out what treatments might help to restore your healthy appearance.