Pico laser for age spots and solar lentigines

Solar lentigines (commonly called “age spots,” “liver spots,” or “sun spots”) are one of the easiest pigmentation issues to treat with pico lasers. Treatment is typically fast, with results visible after 1-3 sessions. Here’s a complete guide.

The short answer

Pico lasers excellently treat solar lentigines (age spots). Most spots clear in 1-3 sessions, with the spot darkening initially and then flaking off over 7-14 days. Per-session cost is low compared to other pico treatments. The 532nm and 755nm wavelengths work especially well.

What are solar lentigines?

Solar lentigines are flat, brown-to-black spots that develop from cumulative sun exposure. Characteristics:

Light brown to dark brown
Distinct edges
Usually on sun-exposed areas (face, hands, chest, shoulders, arms)
Tend to multiply with age and sun exposure
Generally harmless but cosmetically concerning to many people

Solar lentigines are different from melasma (which is hormonal pigmentation, more diffuse) and different from freckles (which are genetic and tend to fade in winter). Treatment approaches differ.

Why pico lasers work so well

Solar lentigines have well-defined surface pigment that absorbs laser light efficiently. Pico’s picosecond pulse shatters the pigment into tiny particles. The shattered particles rise to the surface as a thin crust over 1-2 weeks, then flake off — revealing clear skin underneath.

Treatment protocol

Sessions needed

Most solar lentigines clear in 1-3 sessions. Single sessions often produce complete clearance of treated spots.

Per-spot vs. full-face treatment

Two approaches:

Spot treatment: Individual spots targeted. Lower cost. Good for a few isolated spots.
Full-face/full-area: Many spots treated in one session at once. More efficient for widespread lentigines.

Session intervals

Typically 4-6 weeks between sessions if multiple needed.

What treatment looks like

During treatment: Brief sting or snap on each spot (5-30 seconds per spot)
Immediately after: Spots may turn slightly darker — this is gas release and is normal
Day 1-3: Treated spots darken to nearly black
Day 4-10: Dark crust forms; do not pick
Day 10-14: Crust flakes off naturally, revealing clear skin underneath
Day 14+: Final result visible; some residual pinkness for 1-2 weeks

Which pico lasers work best

Multiple pico platforms excel at lentigines:

PicoSure (755nm): Excellent for surface pigmentation
PicoSure Pro with 532nm handpiece: Adds capability for redder pigmentation
PicoWay: 532nm and 1064nm both work
Cutera Enlighten: Strong pigmentation reputation
Discovery Pico: High peak power, fast clearance

For surface lentigines, almost any pico laser works well. Platform choice matters less than for tattoo removal.

Cost expectations

Single spot: $50-$150 each (small spots), $100-$300 each (larger spots)
Spot treatment package: $200-$500 for multiple spots
Full-face lentigines treatment: $400-$800 per session
Full hands or chest: $300-$700 per session

Often the most cost-effective pico treatment per session because results come quickly.

Aftercare

Apply antibiotic ointment for first 2-3 days if recommended
Don’t pick at darkening or crusting spots
Avoid direct sun on treated area for at least 4 weeks
Apply SPF 50+ daily on treated area for 6+ months
Gentle cleansing only; avoid scrubbing the area

Combining with other treatments

Many practices combine pico spot treatment with full-face approaches:

Pico for spots + IPL for diffuse pigmentation: different tools for different concerns
Pico Toning for melasma + targeted pico for lentigines: different pigment types treated differently
Pico + hydroquinone or retinoid topicals for ongoing pigmentation control

What doesn’t respond as well

Pico lasers excel at solar lentigines but are less effective on:

Café au lait macules — may improve but recurrence common
Melasma — different pigment pattern, different treatment approach
Post-inflammatory hyperpigmentation — depends on cause
Seborrheic keratoses (raised brown growths) — not a pigment problem, requires different treatment

Risks and side effects

Temporary darkening before flaking (expected)
Mild redness for 1-2 weeks
Rarely: persistent hyperpigmentation if sun exposure during healing
Very rarely: scarring

Risks are lowest of any pico laser treatment.

Prevention going forward

After clearing lentigines, prevent recurrence with:

Daily SPF 50+ on previously affected areas
Wide-brim hats for outdoor sun protection
Annual check-in if you notice new spots

Bottom line

Pico laser treatment is one of the most reliable, fast, and affordable applications of pico laser technology. Solar lentigines often clear in 1-3 sessions with predictable results. If you have scattered brown spots from sun damage, pico is generally the most effective non-surgical option.