Page 77 - Chapter 3 - An Introduction to Laser/IPL Hair Removal

Chapter 3 – Fundamentals of Laser/IPL Hair Removal 1st Edition
The results of our model depend greatly on the Richards and Merhag observational data. If new, more accurate, growth cycle data becomes available in the future, then it is easy to input it into the model and generate new interval data.
From Table 18, it is clear that this treatment is a case of ‘diminishing returns’. Each treatment can kill a certain percentage of follicles, but every time a client/patient returns, there are fewer follicles to treat.
Our results are, in some cases, significantly longer than are currently adopted in the commercial world. It is unlikely many laser/IPL operators will wish to leave gaps up to 26 or 32 weeks between treatment sessions, preferring to stick to the ‘standard’ 8 weeks instead. While this will achieve the same end-goal, it will result in many more sessions. That’s a commercial decision. However, it is clearly more important to improve the EKR which can only be achieved through proper choice of wavelength, fluence and pulsewidth.
The gap between treatment sessions does not appear to be important! It appears that “optimising” this gap makes a very small difference in reality. The difference between a short or a long gap will change the overall number of sessions required – but only by one or two sessions! So, choose whichever gap suits you and your business!!
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