Type-based Lasers to Treat Stretch Marks segmentation separates ablative fractional CO₂, Er:YAG, non-ablative fractional 1,550 nm, picosecond 755 nm, and intense pulsed-light devices. Ablative units vaporize micro-columns of scarred dermis, delivering the highest single-session efficacy and commanding ~42 % of 2023 revenue, yet requiring 5–7 days downtime. Non-ablative fractional lasers preserve the epidermis, trading lower morbidity for 3–5 additional sessions; adoption is accelerating in day-care settings because consumables are 18 % cheaper. Picosecond systems harness photoacoustic fragmentation of residual pigment, capturing 9 % of the market and growing 17 % CAGR as darker-skinned patients seek safer options. IPL remains niche, used adjunctively for erythematous striae, representing <4 % share. The interplay between clinical endpoints, Fitzpatrick compatibility, and consumable cost structures determines hospital vs. spa purchasing, creating clear price tiers within the market taxonomy.