Can surgical glue be used on a crescent thigh lift to assist with the sutures being closed and less risk of ripping open?

Dermabond, Mastisol, Benzoin and other surgical glues are often used as adjunctive products to help aid in getting a smooth and quickly healed scar. They do not substitute for sutures in most situations and probably don't add a lot of load bearing capability to areas that are sewn under tension. Thigh and arm lifts are a bit notorious for scar widening (moreso than actual incision opening), as there is often circumferential tension from having reduced the caliber of the :"cylinder" of your arm or leg and some memory in the skin "wanting" to return to its original position with stretching. The most important factors to help try to control the scar width are using multiple layers of suture including to the deep fascial tissues, and avoiding overresecting skin.