Which of the following best describes how lasers work in hair removal?

Lasers used in hair removal function by employing light technology that targets and selectively destroys hair follicles. This process is known as selective photothermolysis, where the laser emits a specific wavelength of light that is absorbed by the pigment (melanin) in the hair. As the light energy is absorbed, it converts to heat, which effectively damages the follicle and inhibits future hair growth.

This method is effective because it allows for precision; the laser can differentiate between the hair and the surrounding skin. It targets only those hair follicles that are in the active growth phase (anagen stage), making it an efficient option for reducing hair growth over time. The technology is designed to avoid harming surrounding tissues while maximizing the impact on the hair follicles themselves, leading to successful long-term hair reduction.