Difference Between Vaginal Rejuvenation with Laser and Without Laser?

The important thing to realize is that industry is aware of the growing attention to vaginal condition and it's connection to women's confidence and sexual pleasure in modern times.  There are many companies that are trying to capitalize on these concerns.  These "new technologies" exist not because they are efficacious or offer something beneficial but rather because there is an extremely profitable market.  These lasers claim to promote "vaginal health" without even qualifying what that statement means.  The most common draw is the concept of "vaginal tightening."  The thought is that coagulative contraction would cause shrinkage of the vaginal walls making a tighter vagina.  This simply doesn't work and if it did would cause big problems.  The important thing to understand is that the vagina does not naturally get tightness from its lining.  During climax the vagina can open up significantly and there is enough surface area of lining in a young and tight vagina to allow a baby through.  Vaginal tightness comes from muscular sling and soft tissue.  Laxity can be attributed to both less tone and less soft tissue from atrophy.  Attempts to directly tighten the vagina like excisional vaginoplasty almost invariably lead the to pain with intercourse.  If we were able to tighten the vagina with a laser the result would be similar.  Many techniques toughted to tighten the vagina are simply caustic agents that irritate and inflame the vagina which leads to dryness that can feel like tightening but a dry vagina is not a good thing.  I recommend staying away from these technologies.  I perform vaginoplasty in my practice by directly addressing the problem-soft tissue atrophy.  I use a special technique of fat grafting to pad, soften and tighten the vaginal walls.  I also use this technique to lower the g-spot so it is more engaged in penetrative intercourse dramatically increasing pleasure and orgasmic potential.  Patients report much more pleasurable sex for both partners, increased intensity and frequency of orgasms and improved lubrication.  The procedure is commonly combined with a MACIE-labiaplasty.  Stay away from lasers and incisions in your vagina!  I hope this helps!
All the best,
Rian A. Maercks M.D.

Vaginal rejuvenation can be done with laser or radio-frequency. Both stimulate collagen production and strengthen the mucosa. They both increase tightness and lubrication. In my experience, radio frequency works slightly better for tightness, while laser provides slightly more lubrication.
New machines emerge every year claiming they are the best without evidence base. All these devices are FDA cleared machines (meet standard for safety to use) but they are not FDA approved for the indication of vaginal rejuvenation. The closest one to my knowledge is ThermiVa radio frequency which is approved in Europe for Vaginal Rejuvenation.

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.