Expert Doctor

Laser Hair Therapy

When it comes to procedures dealing with hair loss, most potential patients think their only options are a hair transplant or a topical solution, which is not true. There is another procedure that is as simple as wearing a cap.  In fact, it’s so easy to use that it fits under a normal baseball cap. The procedure is known as laser hair therapy and it uses the power of light to help restrain hair loss.



Laser hair therapy is a non-surgical procedure that entails converting laser light into energy. While there are a variety of lasers used in medical procedures, the one used in laser hair therapy is called a cool laser. It’s a low-level laser therapy with a 650nm wavelength invisible to light and red light. The red light converts the laser light into an energy called adenosine triphosphate (ATP) that increases the energy in the hair follicles and keeps them in a growing phase.

Hair grows through three phases or cycles:

  • The growing phase, or the anagen phase, runs 1000 days.
  • The intermediate phase is called the catagen phase. This is two weeks where the hair stops growing. The follicle actually stops the growth during this period.
  • The last phase is called the resting phase or the telogen phase.  It lasts 100 days and the hair follicle basically separates from the existing hair during this time.

As somebody starts to lose their hair, their anagen phase gets shorter and shorter. People who’ve lost their hair had smaller or miniaturized hairs. Since hair grows a quarter of an inch to a half an inch a month, it’s not going to grow as fast, or to the same length, as it had grown in the previous cycle.

Laser hair therapy reverses the miniaturized process.  As the hair follicle is dying, the hair it generates is finer. Laser light can stop hair loss by elongating the growing phase.  It keeps the follicles in the growing phase and stops hair loss. If it is caught early enough, the hair loss can actually be reversed and change some of those miniaturized hairs back to fully growing hairs.



The laser hair growth treatment started as a panel where a person sat under the laser. The laser was positioned above the head with a number of lights on it called diodes.  A patient would have to come into an office multiple times a week to sit under the laser. It was hard for a patient to take that much time off work.  Then hair growth lasers for personal use came out starting with the handheld laser. From the handheld laser, it evolved into the cap which a patient can purchase and use at home. They wear it and charge it in an electrical outlet. When they’re ready to use it, they unplug it. It’s got a battery pack that can be put on a belt or in a pocket. The cap can sit inside a baseball cap and is worn for 30-minutes every other day. The laser is a good option for men and women and the process is all non-surgical.



One of the misconceptions is any procedure that’s going to stop hair loss can be lessened at any point. That’s a big misconception. Another misconception is that hair loss stops at a certain age. Hair loss is dynamic. It continues from the time it starts at puberty all the way to death. Eventually the follicles just die.  Yet another misconception is that hair loss is on the mother’s side of the family. That is not true.  It could follow either side.



All laser devices are different. A person could spend $300-$400 for a handheld unit.  They could spend $700-$800, or even up to $3000, for a cap. The more light used in the procedure, the more expensive it is.



The only limitation for laser therapy is that it can only be used on anybody that still has hair. The earlier a person starts laser therapy, the better. Any device or treatment that claims a 100% success rate is false. Studies show between 92%-93% on Propecia and laser for stopping hair loss.



With laser, it takes around three to six months for patients to notice their hair loss stopping. Everybody is different but usually by six months, they’ll lose very few hairs a day.



While laser hair therapy promises ease of use, it is not a procedure that will help everyone.  A patient still needs to have some hair on their head in order for the treatment to be effective.  Whether or not a person is a viable candidate for laser hair therapy is best decided by a skilled doctor.  Please consult with an experienced and trained physician before making a final decision on utilizing laser hair treatment.


Written by Cosmetic Town Editorial Team - MA

Based on an exclusive interview by Dr. Shelly Friedman in Scottsdale, AZ