LASER HAIR REMOVAL: THE SCIENCE BEHIND IT
Why and how does laser hair removal work? Why does it take so long to achieve the desired results? If you’re going to use a laser, why does it matter which kind you use?
Everyone who is considering laser hair removal has these same concerns. To help you decide whether or not laser hair removal is right for you, we’ll break down the reasoning behind each of these inquiries.
How does laser hair removal actually work?
The hair follicles are permanently destroyed by the laser, making hair removal a permanent solution. We use light pulses specifically engineered to kill hair follicles, and thus the hair. The skin is spared while the hair follicle is destroyed thanks to the use of multiple wavelengths of light that are selectively attracted to pigment. Because of this, laser treatment works best on dark hair.
Why does t take so long to achieve the desired results?
Patients typically take 3-18 months to reach their clinical endpoint. The time between treatments varies from 4 weeks up to 8 weeks.
This is due to the fact that laser treatments are only effective on hair follicles that are actively growing hair. Roughly ten percent of your hair is actively growing at any given time. Hair is actually migrating through the skin at these other times before it falls out completely. Each of these stages lasts for a few weeks, so treatment can only occur at regular intervals. It is possible to be treated once a day for two months, but you will likely only see improvement after the first or second round of treatment.
If you’re going to use a laser, why does it matter which kind you use?
Many “lasers” can be found in clinics today. Many of these devices are marketed as lasers but are actually intense pulsed light (IPL) systems (Intense Pulsed Light). The problem with using an IPL instead of a real laser is that it damages the hair without actually destroying the follicle, which means it can only cause temporary shedding and removal.