The principle behind ???? is its ultra-short pulse duration. The laser energy is delivered in trillionth-of-a-second bursts, generating intense photomechanical shockwaves that effectively shatter the melanin clusters responsible for the dark spots into fine particles. Because the energy is delivered so quickly, there is minimal heat diffusion to the surrounding healthy skin tissue. This precise targeting is what makes ???? so effective and safe; it destroys the pigment effectively while preserving the integrity of the surrounding skin, leading to a dramatically lower risk of post-inflammatory hyperpigmentation (PIH), a common concern, especially in Asian skin.