52 year old man, sagging butt due to weight loss

Hello,

Thank you for sharing the information, it is a pleasure for me to answer your question.

It is difficult to evaluate the options without seeing photos,
It is advisable to consult with a certified plastic surgeon, for a good evaluation, to provide you with all the information you need to know about the appropriate recommendations, so that you can achieve the desired goals in your body.

I hope this answer will help you

My best wishes for you...

No photos but will answer generally.   Fat transfer may help and should be considered to minimize the wrinkles.   In addition a true buttocks surgical lift should be considered.  This means an incision above the buttocks with skin and tissue actually cut out surgically.   The scar is about 180 degrees around you but should heal nicely.    This is a fairly rigorous surgery but may be the only answer.    It will definitely give you a lift.   A combination of the buttocks lift and fat transfer from abdomen should be considered.   Please submit photos for a more exact answer.   See a surgeon certified by the ABPS who is also FACS.  Ask more question of RealSelf.   Thanks and My Best,  Dr C