IPL is highly dimensional. What you have is energy per wavelength unit where a unit should be a standard time measurement across the spectrum used. Second you have peak power and average power over the pulse duration and along that spectrum. Finally you have spot size = less scatter, IPL which has greater scatter than laser. If that is not enough you have PMTI's photonic recycling which is non-linear...the lighter the skin the greater the effect. Compound this with counter-intuitive photothermolysis...as with specific vascular and you can see why the MD's just ask me what is best. I have requested the data and will post anything that is not marked confidential. I have been busy but will get back to the board on this matter soon. There are some other items that I have seen that make Este a good system for a wide variety of tx's.
Always remember..it is primarily just the selective photothermal transfer to the target without burning the patient. Hair needs to be raised to about 60C - 75C in anagen phase for permanent destruction. Vascular and pigments are different and all have exceptions to the "rules".