Page 109 - Blog Posts v1

are not cooked for a sufficiently long period then they may recover, and re-generate the follicle, usually with a finer hair (which is more difficult to kill!)
Think of this in terms of boiling an egg – if your water is boiling in a pot (at 100oC) and you place an egg into it for only 1 minute, the egg will not be properly cooked. That’s simply because there was insufficient time to cook it thoroughly. We all know the egg must remain in the water for at least 3.5 to 4 minutes.
This principle can be applied to hair treatments – if the germ cells are not cooked for a long enough time, they will survive. That’s the difference between a successful treatment and ‘re-growing hairs’!! (Incidentally, this principle also applies when treating blood vessels).
Body Area
Scalp Eyebrow
Ear
Cheeks
Beard (Chin)
Moustache(Upper Lip)
Armpits Pubic Area Arms
Legs & Thighs
%Resting Hairs Telogen
15
90
85
30 - 50 30
%Growing Hair Anagen
85
10
15
50 - 70 70
65
30 30 20 20
Duration of Telogen
3–4 months
3 months
3 months
-
8.5 months
1.5 months
2 months
3 months 4.5 months 6 months
Duration of Anagen
2–6years
1–2 months
1–2 months
-
1 year
4 months
4 months 6 months 13 weeks 4 months
Approx. Depth of Terminal Anagen Follicles
3 - 5 mm 2 - 5 mm
2 - 4 mm 2 - 4 mm
1 - 2.5 mm
3.5 - 4.5 mm 3.5 - 4.75 mm
2.5-4mm
35
70 70 80 80
Table 1: Anagen and telogen data in humans
We also need to figure
table 1 shows the depths of these hair follicles during the anagen phase. These can vary between 1 and 5 mm deep. This suggests that we must use a range of fluences across the body to properly heat up the target hairs. Those fluences will depend strongly on the depths of the follicles.
out the ‘best’ fluence to achieve the best results. The last column in
Mike’s Blog Posts 109