“No matter how thickly I apply sunscreen in summer, spots still ‘come due’ after the season, and the laser I did before even caused rebound pigmentation – worse than doing nothing.” This is the real pain point for many women with pigmentation issues. Traditional Q‑switched lasers can remove spots, but they cause significant thermal damage, have long recovery times, and the risk of hyperpigmentation (especially in darker skin types) has always been a “sword hanging overhead.” The PicoSure Smart Picosecond Holographic Skin Clearing System, with its ultra‑short pulse duration (550‑750 picoseconds) and unique holographic diffractive lens technology, “shatters” melanin into dust‑sized particles with minimal epidermal thermal damage – achieving high‑efficiency skin clearing while reducing the risk of rebound pigmentation to unprecedented levels, making skin brightening and spot removal truly “worry‑free.”
Traditional Q‑switched lasers use the “photothermal effect” to shatter melanin, but their relatively long pulse width (nanosecond range) produces significant thermal diffusion, easily burning surrounding normal tissue and leading to post‑treatment redness, crusting, and hyperpigmentation. Especially for melasma or darker skin types, the incidence of post‑inflammatory hyperpigmentation (PIH) can be as high as 30%‑50% – the spots don’t clear, and they get even darker.
While standard picosecond lasers have shorter pulse widths (picosecond range), if the energy focusing isn’t precise enough, there can still be “residual photothermal” effects, limiting the clearance of deep pigments. Often multiple sessions are needed to see results, and for stubborn pigmentation (like melasma or nevus of Ota), the risk of rebound pigmentation remains. PicoSure’s “holographic diffractive lens” technology was designed to simultaneously address both “efficiency” and “safety.”
PicoSure Smart Picosecond Holographic Skin Clearing System is the flagship picosecond laser platform from Cynosure, USA – hailed as the “Hermès of picosecond lasers.” It uses the 755nm Alexandrite laser, the “golden wavelength” for melanin absorption – with an absorption rate 3 times higher than 1064nm, while haemoglobin absorption is extremely low, meaning less vascular damage and lower hyperpigmentation risk.
Its core patent is the Holographic Diffractive Lens technology, which redistributes laser energy into hundreds of “micro‑beams,” creating a uniform “fractional” photoacoustic wave deep in the skin. This “shatters” melanin particles into dust‑sized fragments even smaller than those from standard picosecond lasers, enabling rapid immune clearance. Meanwhile, the epidermis receives very low energy – allowing for no crusting, no skin breakage, and a reduction in rebound pigmentation risk of over 80% compared to traditional lasers.
755nm is the “golden peak” for melanin absorption, with a much higher affinity for melanin than for haemoglobin or water. This means energy is more efficiently absorbed by pigment particles, while surrounding blood vessels and collagen remain largely unaffected. Compared to 1064nm, 755nm can achieve the same pigment clearance at lower energies, dramatically reducing thermal damage and hyperpigmentation risk. For common Asian pigment concerns like sunspots, freckles, and melasma, the 755nm picosecond has a natural advantage.
PicoSure’s holographic lens splits the laser beam into hundreds of uniform “micro‑beams,” each creating a photoacoustic zone about 100μm in diameter beneath the skin. This “fractional” energy distribution ensures that while the skin receives sufficient photoacoustic impact, it still retains numerous “healthy channels” for repair cells to “escape.” Post‑treatment, the epidermis remains virtually intact with only mild redness, subsiding in 24‑48 hours – no prolonged crusting or peeling.
The pulse duration of picosecond lasers (550‑750ps) is much shorter than the thermal relaxation time of melanin (about 500ns). Energy accumulates rapidly within melanin particles, producing a “photoacoustic effect” (rather than “photothermal effect”) that “shatters” pigment into dust‑sized fragments just 1‑2μm in diameter. These tiny fragments are efficiently engulfed and cleared by macrophages, rather than relying on an “excretion reaction” – resulting in more thorough clearance and lower rebound pigmentation risk.
Because the epidermis absorbs almost no energy, PicoSure treatment results in no crusting or skin breakage – only mild redness. At the same time, the “micro‑damage” effect of the photoacoustic wave stimulates dermal fibroblasts to continuously produce new collagen and elastin over 3‑6 months post‑treatment, not only smoothing fine lines and shrinking pores but also improving overall skin “translucency.” PicoSure is thus not just a “spot‑removal tool” but a “full‑layer skin‑clearing platform.”
Natural feel: The spot‑removal effect is “progressive” – spots fade week by week, skin tone becomes increasingly even, ultimately achieving a naturally bright “no‑makeup glow” without the awkwardness of “fake whiteness” or “rebound pigmentation.”
Harmonious integration: While clearing spots, skin texture, pores, and fine lines improve simultaneously – overall tone and texture become harmoniously unified, avoiding the patchy “local whitening with surrounding yellowness.”
Personalised precision: Based on each individual’s spot type (freckles, sunspots, melasma, nevus of Ota), skin tone depth, and sensitivity, energy density, spot size, and pulse count are flexibly adjusted – a “one‑plan‑per‑person” approach.
Long‑lasting durability: Because melanin is mechanically shattered and cleared by the immune system, rather than merely “photoblasted,” results are more durable. With good sun protection, results can last 2‑3 years without rebound.
| Dimension | Traditional Q‑Switched Laser | Standard Picosecond Laser | PicoSure Holographic Picosecond |
|---|---|---|---|
| Pulse duration | Nanosecond (~10ns) | Picosecond (~750ps) | Picosecond (550-750ps) |
| Mechanism | Photothermal (thermal blast) | Photoacoustic (mechanical shattering) | Holographic fractional photoacoustic |
| Epidermal damage | Crusting, peeling (5-7 days) | Mild crusting (3-5 days) | Mild redness (24-48h) |
| Rebound pigmentation risk | High (30%-50%) | Moderate (10%-20%) | Very low (<5%) |
| Melasma effect | Prone to rebound, not recommended | Partially effective | Significant (low‑energy multi‑pass scanning) |
| Skin texture improvement | None | Limited | Significant (collagen neogenesis) |
| Recovery time | 5-7 days crusting | 3-5 days | 1-2 days redness |
Those with active infections, photosensitivity disorders, pregnancy, or current use of photosensitising medications should be evaluated by a doctor first.
💰 Cost Reference
In Korea, PicoSure picosecond laser is priced by treatment area and number of pulses. Full‑face (including jawline) single session costs approximately 600,000 – 1,000,000 KRW; if combined with the neck or hands, an additional 200,000 – 400,000 KRW is added. Depending on the type and severity of pigmentation, a full course of 3‑5 sessions (at 4‑6 week intervals) is recommended, with total costs ranging from 1,800,000 – 4,000,000 KRW. The above includes treatment fees, anaesthetic cream, and post‑treatment ice packs, but excludes repair masks or oral medications.
🕒 Recovery Timeline
Day of treatment: Mild redness and warmth; ice packs can help. Avoid makeup, sun exposure, and high‑temperature environments for 24 hours; use medical‑grade repair sprays.
Days 1‑2: Redness subsides, epidermis remains intact with only a mild “sandpaper” feel (thickened stratum corneum). Normal skincare can resume; focus on hydration and sun protection.
Weeks 1‑2: Pigment particles begin to be metabolised; spots gradually fade, skin tone brightens, and radiance improves. This is the “active effect” phase – results become visible day by day.
Month 1: Skin tone becomes even and translucent; spots significantly reduced; skin texture refined. The second session is recommended at 4‑6 weeks to build cumulative results.
Months 3‑6 after completing 3‑5 sessions: Skin tone is even and stable; pigmentation issues are fundamentally improved; skin exhibits a “translucent” quality. Annual maintenance is recommended to consolidate results.
Pigmentation is not the skin’s “original sin” – it is the mark of UV, hormones, and time. The wisdom of PicoSure lies in using ultra‑short photoacoustic energy to “gently” shatter melanin, rather than “scorching” it with heat – like using ultrasound to clean a precious porcelain piece, rather than sanding it. When you notice that even without makeup, your skin emits an even glow, and spots are no longer “permanent residents,” you’ll understand – true brightening is not “removing colour,” but restoring the skin’s natural “clean base.”