Hair removal + energy per pulse

[coralie]

Hello,

When you do the hair removal, do you know the parameters.

My dermatologist use the Deka laser, alexandrite, and the parameter is:
Frequency is 1,5hz
The energy pulse is 18j/cm2

For me the energy pulse is to low.

King regards,

Coralie

[spacecase0]

my laser is about 30 j/cm2 with 1/10 second pulses (so it is 60W out for 1/10 second and has an area of about 2 mm2 if I did my math correct)
and I think that is to low as well,
I seem to remember that it needs to be 40j/cm2 or so
and 60j/cm2 if you have cooling for the skin,
and you should have a system that cools the skin to get best results

from a web page on the LightSheer laser (I could not remember the numbers)
"The ideal pulse duration for hair removal is felt to between 10 - 50 ms"
so you really want the light to fry the hair without hurting the skin,
the skin takes longer to warm up than the hair...

the laser I bought almost works right, but it is more useful for cauterizing wounds (like when I cut myself shaving and need it to quit bleeding), or for fixing spider veins (it just coagulates the blood in them)

[Meshi]

I had the Light Sheer diode laser, which is supposedly the "gold standard" for laser hair removal.  You really must do your homework here, as many clinics or office staff havent a clue on how to use there lasers, nor have they been trained by the manufacturer. I have not heard of anyone using this particular laser you speak of, although i have heard of it.  Settings all depend on skin tone and the color of the hair of course.

[spacecase0]

I use to work for the company that made the LightSheer laser,
the alexandrite lasers that were being used at the time was the market that we were going to try and replace
alexandrite lasers leave you in lots of pain and are less effective,

Michelle Hayden is right,
training is critical, and often the places that use the lasers train the first person,
then that person shows the next one how to do it,
and years later after a few people they have no clue how to use it properly.
the other issue is people wanting to keep using older lasers to save money when there is way better technology out there.

the lightsheer will go up to 100 J/cm2 and if you have light colored skin that is how much you should be using on that laser (because it cools your skin off before zapping so they can get more energy in the skin without causing damage)
the people running them often are shy about turning it all the way up,
or if they do, they are sometimes not good at turning the power down when they start burning someone's skin...
or they let the optics get dirty and put tiny burn marks in the skin (if that happens they need to stop and clean it)
it really should be run right at the limit of what your skin type lets you run.