Pigmentation treatment duration: ① superficial pigmentation: 2–3 months, ② moderate melasma: 4–6 months, ③ deep/stubborn melasma: 6–12 months, ④ post-treatment maintenance: 3–6 months. Combined laser toning sessions every 2 weeks accelerate results. Patience is key — pigmentation removal cannot be rushed. Premature aggressive treatment causes rebound darkening. Strict sun protection during entire treatment period is essential for success.