{"procedure":{"id":"q_switched_nd_yag_laser","name":"调Q Nd:YAG激光","type":"category","family":"调Q Nd:YAG激光","category":"调Q Nd:YAG激光","price":"mid","pain":2,"downtime":2,"visible_in":3,"lasts":2,"summary":"调Q Nd:YAG色素与嫩肤激光","explanation":"调Q Nd:YAG激光是一类色素与嫩肤激光,输出高峰值功率脉冲,用于改善易长黄褐斑的肤色、雀斑、色斑、纹身色素和整体提亮;此类中的部分平台还可改善泛红和可见血管。它涵盖Spectra VRM4、Revlite SI、Fotona StarWalker、Lumenis PiQo4、Curas Hybrid、Chrome、Hera XP和GV等设备,以及Excel V、DermaV、V-laser和Gemini等偏血管型系统。最适合根据肤质,循序渐进、低恢复期地进行肤色矫正。","target":"黄褐斑相关肤色不均、雀斑、色斑、纹身色素、泛红、可见血管、提亮","description":"调Q Nd:YAG激光是一类色素与嫩肤激光,输出高峰值功率脉冲,用于改善易长黄褐斑的肤色、雀斑、色斑、纹身色素和整体提亮;此类中的部分平台还可改善泛红和可见血管。它涵盖Spectra VRM4、Revlite SI、Fotona StarWalker、Lumenis PiQo4、Curas Hybrid、Chrome、Hera XP和GV等设备,以及Excel V、DermaV、V-laser和Gemini等偏血管型系统。最适合根据肤质,循序渐进、低恢复期地进行肤色矫正。","detail":{"id":"q_switched_nd_yag_laser","name":"Q-switched Nd:YAG Laser","price":{"basis":"1 full-face toning session","krw_max":200000,"krw_min":50000,"varies_by":"sessions"},"dosage":{"unit":"sessions","options":[{"tag":"Trial","note":"Trial / touch-up","amount":"1 session","coverage":"Full face","description":"Good for a first try or maintenance between courses.","krw_typical":100000},{"tag":"Popular","note":"Typical starter course","amount":"5 sessions","coverage":"Full face","description":"Common package for dullness, freckles and mild pigment.","krw_typical":490000},{"tag":"Course","note":"Melasma / stubborn tone","amount":"10 sessions","coverage":"Full face","description":"Longer course for melasma-prone or stubborn tone, spaced 1-2 weeks apart.","krw_typical":890000}],"unit_explainer":"Laser toning is priced per session (full face). Results build over a course, so clinics sell 5- or 10-session packages; more sessions mean more gradual improvement, not stronger single treatments."},"header":{"one_liner":"A short-pulse laser used in selected pigment and other laser protocols.","target_tags":["Melasma-prone tone","Freckles","Dark spots","Tattoo","Redness"],"category_label":"TONING","technology_label":"Q-SWITCHED Nd:YAG"},"details":{"sessions":"5-10 sessions (toning) or 1-3 (spots)","aftercare":"Frequently short social downtime, but redness, swelling or pigment changes can occur. Avoid unnecessary heat and sun exposure as instructed; travel is generally considered only if the skin is recovering normally.","anesthesia":"Usually none; numbing cream for spot removal or sensitive skin","regulatory":"One verified example is the Classys Eleray Q-switched Nd:YAG device, which operates at 1064nm/532nm and is registered in Korea as medical device Jeheo 15-629.","technology":"Q-switched (nanosecond) Nd:YAG 1064/532 nm; group also includes long-pulse 532/1064 vascular platforms","measurement":"Sessions (full face); spot removal sometimes per lesion","manufacturer":"Various (Lutronic, Cynosure, Fotona, Quanta, Lumenis, Cutera, Korean makers)","repeat_interval":"1-2 weeks (toning) / 4-6 weeks (spot removal)","technical_specs":"1064 nm targets dermal pigment and is used at low fluence with a large (6-10 mm) spot for 'laser toning'; 532 nm targets epidermal spots and red/orange ink. Q-switched pulses are ~5-20 ns. Vascular-leaning members (Excel V, DermaV, V-laser, Gemini, GV) use long pulses (ms) at 532/1064 nm.","before_treatment":"Avoid tanning and retinoid/exfoliant use for ~1 week; arrive without makeup; tell the clinic about recent peels, isotretinoin or photosensitising medicines.","safety_suitability":"Avoid with active infection/inflammation, recent tanning, isotretinoin within ~6 months, photosensitising drugs, pregnancy (elective), keloid tendency. Melasma can rebound or develop mottled hypopigmentation if toned too often or too aggressively — conservative settings and strict sunscreen are key, especially for darker Asian skin types."},"recovery":{"flying":"Usually possible; use strict sun protection","makeup":"Usually next day (gentle mineral makeup same day at some clinics)","alcohol":"Avoid for 1-2 days (can worsen redness)","exercise":"Light exercise next day; avoid heavy sweating for 24-48 h","sauna_heat":"Avoid sauna, hot baths and jjimjilbang for ~3-7 days","back_to_daily":"Immediately","common_side_effects":["Mild redness for a few hours","Warmth / slight sting","Temporary dryness","Rare: post-inflammatory hyperpigmentation or mottled hypopigmentation with overly frequent toning"]},"references":[{"url":"https://classys.co.kr/product/eleray/","title":"Classys Eleray Q-switched model example"}],"quick_facts":{"pain":"Mild (snapping / warm prickling)","downtime":"None to minimal","results_last":"Months; pigment can recur with sun/hormones — maintenance needed","treatment_time":"10-20 min","results_visible":"Gradually; usually after 3-5 sessions"},"alternatives":[{"name":"Excel V Laser","catalog_id":"excel_v_laser","consider_when":"Redness and visible vessels are the main concern."},{"name":"Lumenis PiQo4","catalog_id":"lumenis_piqo4","consider_when":"Stubborn pigment or tattoos where picosecond pulses are preferred."}],"before_after":[],"good_to_know":["Q-switched Nd:YAG lasers can be used for tattoo removal and benign pigmented lesions, while low-fluence toning for melasma is also commonly used in practice.","The expected number of sessions and result timeline can differ for spot pigment removal, melasma toning, and tattoo treatment, so they should not be treated as the same.","Whether this treatment is suitable depends on the device mode used, your skin type, and your diagnosis, which the treating doctor will decide."],"how_it_works":{"steps":[{"body":"The doctor checks pigment type and depth (freckles, sun spots, melasma, redness) and chooses wavelength, spot size and energy.","title":"Skin assessment"},{"body":"Makeup is removed; protective eye shields are placed. Numbing cream is usually unnecessary for low-energy toning.","title":"Cleanse & protect"},{"body":"The handpiece glides over the face in several passes; very short pulses shatter pigment (or heat vessels) while sparing surrounding skin.","title":"Laser passes"},{"body":"A cooling mask or calming care is applied; sunscreen goes on before leaving.","title":"Soothing"}],"how_delivered":"Pulsed laser light at specific wavelengths absorbed by melanin; energy is converted to a photo-acoustic / photothermal effect in the target.","illustration_idea":"Cross-section of skin with melanin clusters being broken into tiny fragments by short laser pulses, then cleared by immune cells.","what_touches_skin":"Laser handpiece tip (non-contact or light contact) — no needles","what_it_feels_like":"Light rubber-band snaps or warm pinpricks; most people tolerate it without numbing."}}}}