Laser treatment is a very effective method for facial hair removal, but it does take some time to permanently reduce the hair on your face. The reason for this is that it takes multiple facial hair removal sessions to catch all of your hair at the right point in their growth cycle.
The Hair Growth Cycle
Every hair on your face and body goes through the same growth cycle, but they aren’t all at the same point in the cycle. The first hair growth phase is known as anagen. During this phase the hair grows and becomes visible above the skin. The length of this phase depends on how long the hair will eventually grow, but it is usually at least two or three weeks. The second stage is a transitional stage called catagen that usually lasts for just a few days. The root begins to degrade, detaches from the papilla, and gets ready to fall out. The final stage is called telogen. The hair is no longer growing and it will drop out at some point in the next few weeks.
Getting Laser Hair Removal Right
Laser treatment is most effective against hairs in the anagen phase. The laser can affect both the hair and the papilla, which prevents regrowth. Laser hair removal is less effective during the second phase as it cannot prevent the hair growing back. During the final phase, laser treatment can’t affect the hair at all. In order to catch each hair while it is in the anagen growth phase, it is necessary to perform multiple laser treatments, over several weeks. It is important to stick to the schedule for facial hair removal, since missing a treatment could mean missing the anagen phase for some of the hair. If it has reached the next phase of the cycle by your next treatment, the laser won’t be able to prevent it growing back.