The main page for CO2 laser in Singapore covers the platform, who it suits and how it is planned.
Published 7 October 2026 · Reviewed by Dr Sin Yong
CO2 laser downtime after fractional resurfacing runs in phases: redness, swelling, pinpoint bleeding and oozing on the day; crusting and peeling over the following days; then pinkness that fades gradually while collagen remodels beneath. How long each phase lasts depends on the depth and density used, the area and the person, and is discussed at consultation.
Illustrative. Fractional CO2 creates a wound that must heal; the phases are predictable, their length is individual.
Key facts
Treatment day
Redness, swelling, pinpoint bleeding and oozing are expected and are part of healing
Following days
Crusting and peeling develop and shed on their own; no picking
Settling
Pinkness fades gradually; collagen remodels beneath for longer than the surface takes to close
Needs a call
Thick yellow or oozing crusts, blisters, increasing pain, swelling or warmth, spreading redness, fever
Sun
Strict protection throughout; darkening is the risk most relevant to Asian skin
Make-up
Only once the surface has closed and you have been told it is safe
What happens on the day of a fractional CO2 laser?
On the day of a fractional CO2 laser the treated skin is red, swollen and dotted with pinpoint bleeding, and it oozes a clear or straw-coloured fluid for a period afterwards. That is the expected appearance of a fractional wound, not a complication: the laser has vaporised fine columns of skin and left intact skin between them, and the surface is beginning to heal from those bridges. Topical or local anaesthetic is used beforehand, and most people describe heat and tightness afterwards rather than pain. The platform and protocol are described on the Tetra Pro fractional CO2 page.
You leave with written aftercare that sets out how to cleanse, what to apply, what to avoid and which signs to report. Where there is a history of cold sores, antiviral cover is started before treatment, because a flare on freshly resurfaced skin is one of the more common problems recorded after deep fractional CO2.
What do the first days look like?
Over the following days the oozing settles and the surface darkens to a bronzed, sandpaper-like crust as the treated columns dry. The skin feels tight and can itch; swelling is usually greatest in the first mornings, particularly around the eyes, and eases through the day. The crust then flakes and peels on its own, revealing pink new skin underneath. How many days each stage takes depends on how deep and how dense the treatment was: a light pass over texture heals faster than a deep pass over established boxcar scars.
Care in this phase is deliberately plain: gentle cleansing, a bland moisturiser or the ointment advised, sleeping with the head raised, and no picking. Scrubs, exfoliating acids, retinoids and vitamin C are set aside until you are told to restart them. Picking a crust off early exposes skin that is not ready and is the commonest cause of a mark that outlasts the rest of the healing.
“The laser is only half the treatment. The pulse shape chosen for each scar is the other half.”
Dr Sin YongOn planning fractional CO2 for acne scars
Illustrative image — not a patient.
What is expected, and what needs a call?
Expected: redness, swelling, oozing, bronzing, crusting, peeling, tightness, itch and pinkness that fades over time. Needs a call: crusts that become thick, yellow or weepy; blisters; pain, swelling or warmth that is increasing rather than settling; redness that spreads beyond the treated area; fever; or a cluster of small blisters suggesting a cold sore. These point to infection, a burn or a viral flare, and each is treated more easily early. Contact the clinic on +65 8023 7170 during clinic hours; outside hours, urgent signs go to an emergency department, as the complication care page explains.
Darkening that appears after the skin has healed is usually post-inflammatory hyperpigmentation, more likely in Asian skin and after sun exposure. It is reviewed rather than treated over, and strict sun protection matters in the meantime.
What does each healing stage after CO2 laser look like?
This table sets out CO2 laser downtime as stages rather than dates, because how long each stage takes depends on the depth and density of the treatment planned for your scars. For each stage it describes what the skin looks like, what to do and the signs that need a call to the clinic.
Stage
What the skin looks like
What to do
What needs a call
Straight after
Red, swollen, pinpoint bleeding and clear or straw-coloured ooze; heat and tightness
Follow the written aftercare: gentle cleansing, the ointment advised, head raised when sleeping
Pain that increases rather than settles; blistering
Early phase
Ooze dries to a bronzed, sandpaper-like crust; swelling greatest in the mornings, especially around the eyes
No picking; no scrubs, acids, retinoids or vitamin C until told to restart; shade and a hat
Thick, yellow or weepy crusts; spreading redness; fever; a cluster of small blisters
Settling
Crust flakes and peels on its own to show pink new skin
Mineral make-up only once the surface has closed and you are told it is safe; sunscreen once re-epithelialised
Delayed healing in one area; an area that stays raw
Later
Pinkness that fades gradually; the scar response is assessed at review
Strict sun protection; the next stage of the scar plan is timed to the healed skin
Darkening after healing, which is reviewed rather than treated over
When can make-up and sun exposure resume after CO2 laser?
Make-up waits until the surface has closed and you have been told it is safe, because applying it over open micro-wounds introduces bacteria and traps debris. Mineral products are usually the first permitted. Sun is the larger issue: resurfaced skin is more vulnerable to ultraviolet light for longer than it looks, and in Singapore's climate the risk of darkening is the reason sun protection is treated as part of the treatment rather than aftercare. Shade, a hat and avoidance of direct sun apply from the start; broad-spectrum sunscreen is added once the skin has re-epithelialised and you are told to use it.
Illustrative image — not a patient.
How should you plan work and social commitments?
Plan on the basis that the crusting and peeling phase is visible and not concealable with make-up, and schedule treatment when you can be at home or on video with the camera off for that period. Exercise, swimming, saunas and anything that heats or soaks the skin wait until the surface has closed. Travel to a hot or sunny destination is better placed well after, not during, the healing phase. What that means for your diary depends on the depth planned, and it is discussed honestly before treatment, as set out under what happens at a consultation.
What happens at review, and what does pinkness mean?
Pinkness after the surface has closed is new skin with a rich blood supply, and it fades gradually; it is not the result, and it is not a problem unless it is spreading or painful. At review the healed skin is checked for pigment change, for any delayed healing, and for how the scars have responded, and the next step in the scar plan is timed to the healed skin rather than to the calendar. Where fractional CO2 is one stage of a sequence, the acne scar treatment page explains how release, support and resurfacing are ordered.
Your next step
1. MessageWhatsApp +65 8023 7170 with what is bothering you. A reply comes from the clinic, not a bot.
2. AssessmentDr Sin Yong examines you himself on Orchard Road, with ultrasound where earlier filler is involved.
3. A plan in writingWhat he would do, what he would not, the fee factors, and the option of no treatment.
Every treatment is performed by Dr Sin Yong personally. Singapore Medical Council registered · invited to share his clinical expertise internationally as a Key Opinion Leader for CLASSYS, DEKA, HIRONIC, FOTONA, ALMA, LUTRONIC and ILOODA · HSA-registered devices · ultrasound-guided correction
Redness, swelling, pinpoint bleeding and oozing at first, then tightness, a bronzed look, fine crusting and peeling, are expected, followed by pink new skin that blends in gradually. Thick yellow crusts, oozing that increases, blisters, clusters of small painful sores, rising pain or heat, spreading redness or fever are not normal and need a call.
It depends on the depth and density used and on what your work involves. The skin is red, swollen and oozing on the day and crusts over the following days, and that phase is visible. Timing is discussed before treatment so you can plan around it.
Yes. Clear or straw-coloured fluid from a fractional wound in the first period is expected. Thick, yellow or foul-smelling discharge, increasing pain or spreading redness is different and needs a call.
Bronzing and crusting in the first days is dried treated skin and sheds on its own. Darkening that appears after healing is usually post-inflammatory hyperpigmentation, more likely in Asian skin and after sun exposure; it is reviewed rather than treated over.
Once the surface has fully closed and you have been told it is safe. Make-up over open micro-wounds introduces bacteria and traps debris, and mineral products are usually the first permitted.
Generally, yes. Depth and density set how much skin is vaporised and how long the surface takes to close, which is why the settings chosen for your scars decide the healing phase rather than a standard timetable.
Not until the surface has closed and you have been told it is safe. Sweat, heat, swimming and saunas irritate open micro-wounds and raise the risk of infection and prolonged redness.
The adverse events of deep fractional CO2: a retrospective study of 490 treatments in 374 patients. Lasers in Surgery and Medicine (Shamsaldeen O, Peterson JD, Goldman MP), 2011. source
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