Is thermiva effective at shrinking labia?

That’s a great question. Thermiva can tighten skin to some extent
but can’t replace surgery in all circumstances. Thermiva won’t
completely fix an inch of skin though you may see an improvement. A
labiaplasty would be able to address this. Good luck.

That is a NO.   I have had many patient come to me for a second opinion after being promised that Thermiva or any of the lasers help to shrink labias or for that matter tighten vaginas.   Laser are not a substitute for surgery.  Do not be fooled by marketing efforts promoting vaignal tighting and labiaplasty via lasers.