I've just finished my 5th treatment by Coolglide for my arms, underarms, legs, tummy and face. The results have been really good. My skin type is V. The settings the nurse uses on my body are: 30 msec, 55 joules, 1.2 speed.
I also have hair on my chest and back, but these are fine, almost microscopic hairs. My doctor says Coolglide doesn't work on vellus hairs. She did do some test shots at 25 msec, 60 joules, but I can't see an effect. Apparently increasing the settings any higher would be dangerous for my skin type.