Excessive Skin Removal and Lower Lid Not Approximated After Lower Bleph. Does Skin Grow Back?

It is very difficult to answer this without a set of pictures or examining you.  New skin won't grow back but the skin that is there can stretch.  You may very well go on to need revision surgery, but conservative measures are indicated for a few months.  Make sure that you are seeing a board certified surgeon.

Best,

Skin does not grow back after some of it is excised on the lower eyelid during blepharoplasty.  It is possible that as the area heals, that the skin will stretch a bit and can improve an issue with ectropion.  Without an examination, it's impossible to know if your problem will improve with more time or not.  The techniques of massage, taping and finger push up can sometimes help.  

This is a very hard question to answer without pictures and an examination.  However, if excess skin was removed at the time of surgery, the contractile forces of healing will lead to lower eyelid retraction, or worse still ectropion.  If cictatricial ectropion occurs, it will require surgical correction.  Mild lower lid retraction and chemosis that develop in the early postop period often resolve spontaneously.  The degree and severity of your specific problem requires  an in person consultation.  It is always best to discus your concerns with your  Surgeon and consider a 2nd opinion if you do not feel reassured.