Larry sent me this today for further information:
Just read up on Hair Tell – and just I wanted to clarify (so there are no mis-understandings) - I’ve had a few emails and calls…
Lasers work better on pigmented bikini line hair than any other area – reason being: this hair is non hormonal (produced at puberty), thicker and darker hair (more opportunity to attract the laser energy) and generally most bikini hairs lie parallel to the top layer of the skin (not very deep).
The genital areas such as the labia and scrotum do not work as well. I have cleared the bikini area (non genital) in 4-6 treatments however, the genitalia usually needs a treatment 2-3 times a year. This hair can stay away up to 4-6 months, but seems to always reappear. Usually the hair grows back thinner and not as coarse. The reason for this is that the red blood vessels reflect the red laser light used for laser hair removal (LHR). Wavelengths such as: 694nm Ruby, 755nm Alexandrite, 810nm diode and 1065nm Nd:YAG (near infrared – IR) are red wavelengths. Red reflects off of red and does not allow the laser energy to absorb to the small hairs. Also, the hair follicles in the genitalia area are surrounded by oil glands, which is an insulator, which will protect the follicle walls from heat and laser energy. The other hairs on the bikini line that are not on the labia, scrotum, etc. are mostly surrounded by water which accelerates the effectiveness of the laser energy.
I hope this helps…you can post this if you like.