What percentage of hair follicles are typically damaged with each laser treatment?

During laser hair removal treatments, it's common for a percentage of hair follicles to be effectively damaged or destroyed with each session. The distinction of approximately 15% is based on the understanding of how laser energy interacts with hair follicles.

The process involves targeting actively growing hair follicles during the anagen phase, which represents a portion of the hair at any given time. Since not all hair follicles are in this growth phase simultaneously, the treatment typically results in a cumulative damage effect, with about 15% of the targeted follicles being impacted in a single session.

This percentage reflects an average across various hair types and treatment modalities, emphasizing the need for multiple sessions to achieve the desired results in permanent hair reduction. Thus, understanding this concept is crucial for setting realistic expectations for clients undergoing laser hair removal.