Difference Between Vaginal Rejuvenation with Laser and Without Laser?

This is a good question but clarification is needed.  If you are referring to office procedures that are non surgical there are Lasers such as the femlift that can provide some tightening. Compare this to Thermiva that uses radiofrequency.If you are describing a surgery to tighten the vaginal canal that is different.  Laser vaginal rejuvenation has been marketed from Beverly Hills for twenty years.  The surgical outcome is determined more by the surgeon and the anatomy than the energy source used such as a laser. 

Thank you for your question 
There are two uses for lasers in “vaginal Rejuvenation “ 
One is the noninvasive procedure which takes a few minutes(Mona Lisa etc) . This along with radio frequency (thermiva)can increase circulation and collagen formation to improve dryness and mild vaginal “tightening “
The other is use in surgery. This is only a marketing tool and has no practical effect. There is no significant difference in blood loss or any other benefit. The term is a trademark used to promote a traditional procedure called anterior and posterior repair.

A laser is a device which emits energy at a particular wavelength and, in the case of vaginal rejuvenation, delivers energy to vaginal tissues causing shrinkage and tightening. The ThermiVa uses radiofrequency to heat the tissues to allow for shrinkage. While we don't do laser vaginal rejuvenation, I can tell you that an overwhelming number of ThermiVa patients are thrilled with their results.