How does fluence change in the skin and why can this stop good results when treating hair, tattoos or blood vessels?

Posted in Interesting stuff

The way light moves through the skin is quite complex. When photons ‘meet’ atoms they can either be absorbed, scattered or completely ignored. This may happen many millions of times, or, sometimes, only once!

The effect these events have on the fluence (energy concentration) can be quite marked. In this video I explain what can happen in the skin with light of various wavelengths and why this can prevent the treatment results we are after.

Hope this helps,

Mike.

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Published by Mike Murphy

I started in medical lasers in 1986! I have been involved in clinical research, medical laser and IPL development, sales and marketing across Europe and South East Asia, business start-ups, theoretical research into laser-tissue interactions, training course development, writing articles for peer-reviewed journals and industry magazines. I am currently the Chairman of the Association of Laser Safety Professionals.

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