Page 89 - Mike Murphy's Blog Posts

A26 - SHR/In motion update
I read an interesting paper on this topic, last week. It was a clinical study looking into the application of ‘super hair removal’ using a low fluence output from a diode laser.
As you may already know, I’m not a big fan of this technique. I feel that it is ‘tricky’ to administer properly and makes it too easy to burn the skin.
The study used an 810nm diode laser with a fluence range between 5 to 10 J/cm2, in a pulsewidth range between 10 and 20ms, with a repetition rate of 10 Hz. They divided the treatment area into 10x10 cm squares and applied a ‘lateral movement of the handpiece in a constant sweeping mode’ at a speed of approximately 10 cm/second.
They delivered a maximum of 9.6 kiloJoules into each square area, resulting in an average of 96 J/cm2. Of course, this was over an extended period of time, so cannot be directly compared with a ‘stamping’ technique fluence, which typically uses between 20 and 40 J/cm2 per pulse. They didn’t say how many passes were needed to achieve this target.
Their diode laser had a water-chilled window which cooled the skin. In addition, they used a Zimmer air cooling device too.
They found that many patients reported ‘low’ pain using this technique, with a relatively small number saying it was high or very high. The vast majority reported a ‘good’ result after six months after six sessions. A small number reported ‘burns’ but these were resolved after six months.
It appears that this technique was very successful, but they appear to have been quite precise about its application.
Mike’s Blog Posts 89