LAgirl,
I am planning to switch to a provider who has a GentleMax, which I believe has a pulse range of 0.25-300ms, with the added benefit of spot sizes upto 18mm.
My one treatment on a Yag was at 24J, 20ms, with a spot size of 9mm(?). I had few red bumps after the treatment on my armpits, and excellent shedding with no regrowth in 5 weeks since the treatment.
Would going from 9mm to 18mm require a substantial reduction in joules? How much is 24J with 18mm spot size equivalent to in fluence with a 9mm spot size? Is there a simple rule of thumb or formula that one can use?
Btw, I returned my Tria today as I wasn’t very confident about its effectiveness. I will update with results in about 3-6 months on select areas on my arm and hand where I used it extensively.