Laser hair replacement is a painless hair restoration procedure. During low level laser therapy, hair follicle cells absorb laser light, which stimulates growth and repair. Typically, a patient visits the doctor weekly or biweekly to get the treatment and requires no downtime or recovery time. It works best for patients at an early stage of hair loss.
For those who are shy about going to the doctor’s office or concerned about hair replacement cost, laser combs allow individuals to use a laser hair growth device in the privacy of their own homes. Depending on the brand, this laser hair treatment should be performed several times a week, from 10 to 15 minutes or more per session.
Laser hair growth procedures are FDA-approved and there are no reported serious side effects. The therapy is often used in conjunction with other hair loss treatments.
The interaction between laser light and living tissue is defined as photobiology. Photobiology can be subdivided into laser-tissue reactions defined as photochemistry and photophysics—that is, stimulation of chemical or physical reactions by laser light.