Page 105 - Blog Posts v1

In the above graph we can see the percentage reduction of all hair after each treatment session. After the first treatment we can see a total reduction (of all hair) of around 27%, followed by 21, 19, 12 and then 6%. The final treatments only remove around 3% each!
It really is a case of 'diminishing returns' with each treatments. There are fewer anagen follicles available each time a patient/client comes back, so each treatment attacks a smaller number of anagen follicles.
Summary
As we can see, the reduction of hair following laser/IPL treatments is not obvious. Assuming the worst possible outcomes in each treatment, we can see that the loss of hair follicles drops by around 20 to 27% for the first three sessions, then drops to around 12% and below. Just over two-thirds of the hairs (67%) are removed in the first three sessions.
But, the top graph shows that the number of anagen follicles may not change by that much over the first three or four sessions. This can be a bit irritating when treating clients/patients, but you should explain that they are seeing 'new' growth alongside 're- growth' (from those follicles you didn't kill previously).
I will do this analysis again using a longer gap between sessions - that should yield a more efficient outcome. I'll post this up soon...
Hope this helps, Mike.
Mike’s Blog Posts 105