Page 98 - Chapter 3 - Laser/IPL Hair Removal

Chapter 3 – Fundamentals of Laser/IPL Hair Removal 2nd Edition
Figure 48 – Heating coloured objects with light
The fundamental concept of Selective PhotoThermolysis relies on selective light absorption and following heating of specific tissue structures.
For a deeper understanding of how Selective Photothermolysis works, please view the video (right).
To achieve selective tissue heating the colour of the light versus the colour of the tissue in the vicinity of the tissue specific target is essential. To better understand this process of colour selective heating we again will exemplify sunlight exposure of objects with different colours. The sun light itself contains of all the visible colours (the ‘rainbow’ spectrum) ranging from indigo blue to deep red (Figure 48). The visible spectra wavelength ranges from about 400 nm (violet blue) to 750 nm deep red.
________________________________________________________________________ 98 Chapter 3, Ed. 2.0 Laser/IPL Hair Removal
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