5. ”Physical” Side of the Procedure
How the Laser Beam Works
Professionals need to explain the scientific principles behind laser removal to clients. Lasers emit concentrated light energy in ultra-short bursts, breaking down pigment particles in the skin into smaller pieces. This process resembles rapid heating, causing gas release and a bleaching effect on the hair, with secondary effects on the skin. The removal occurs over multiple sessions, spaced at least six weeks apart, to allow for proper clearance and healing. The number of sessions required depends on factors like the depth of pigment application, pigment type, and the intensity of the original application.
The Cause of the Unpredictability of Results
The complexity of laser removal extends beyond simply fragmenting pigment. We often lack precise information about the pigment's particle size and the strength of the bonds within these particles, making it difficult to predict at what structural level the laser will break down the colorant—whether it's the acinus agglomerates, the aggregates themselves, or individual particles.
Hierarchical Breakdown of Colorants
The breakdown usually starts with the larger agglomerates disassembling into aggregates, held together by weaker van der Waals forces. The laser separates these aggregates into individual particles bound by stronger covalent bonds. Molecules within these particles are even more resistant to breakdown due to their internal covalent bonds. Lastly, atoms, shielded by these bonds, are the most stable and resistant to decomposition.
Reasons to Avoid Prognosis
Given the tiered challenge of laser removal, addressing pigment breakdown from larger clusters to more stable atoms, professionals can only speculate on the number of sessions needed for complete removal. This uncertainty requires a careful and informed approach when setting expectations with clients seeking laser pigment removal.