Page 66 - Chapter 3 - An Introduction to Laser/IPL Hair Removal

Chapter 3 – Fundamentals of Laser/IPL Hair Removal 1st Edition
Figure 24 - A ‘set’ of hairs representing the upper lip.
The pink boxes in Figure 24 represent the anagen phase hairs, beige boxes are catagen and the green boxes are the telogen phase hairs. The time axis is pointing downwards, on the left (in weeks).
The first interesting thing we noticed is that the sum of the anagen, catagen and telogen phases represents all the hairs in that part of the body. So, in the diagram above which represents the upper lip, every hair can be represented by a total of hairs since every hair will be in one of these ‘weeks’ (the anagen phase in upper lip hair appears to last between 8 and 20 weeks, apparently - in this scenario we have chosen to study the 8 week anagen cycle hairs).
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