Chemical Peel vs Fractional CO2 Laser

Chemical Peel: An acid solution applied in the office to shed the top layers of skin. Superficial peels clear pores and fade brown marks; medium peels reach texture and deeper sun damage. It does not fix indented scars.

Fractional CO2 Laser: An ablative laser that vaporizes thousands of microscopic columns of skin, leaving untouched skin between them to heal from. It is the most effective in-office treatment for indented acne scars, and the one with the most downtime and the highest pigment risk.

Reviewed by Dr. Schwarz, Board-Certified Dermatologist
Last updated: 10/22/2026

Editorial illustration for Chemical Peel, based on the entry’s treatment or equipment reference.

Editorial illustration for Fractional CO2 Laser, based on the entry’s treatment or equipment reference.

Choose if Key differences What is it?What it treats Treatment areas Skin tones How it works Before your treatment Day of treatment After your treatment Risks Cost Questions Related

Choose Chemical Peel if…

Choose for brown marks, clogged pores or dull, sun-aged texture — not for indented scars.

Melasma or dark marks alongside creams
Clogged pores and mild acne
You can avoid sun before and after

Choose Fractional CO2 Laser if…

Choose for the biggest single improvement in indented acne scars or deep sun damage, accepting the most downtime and pigment risk.

Boxcar or rolling acne scars
Deep sun damage or wrinkles
You can take a week or more off

Alternatives, not combined

Can you have both?

Both resurface the skin. CO2 is much deeper with weeks of healing; peels are lighter. Light peels may be used later to maintain results.

Key differences

● Chemical Peel

● Fractional CO2 Laser

DowntimeNone → 2+ weeks

1–2 days

1–2 weeks

PainMinimal → Needs anesthesia or sedation

Mild

Needs anesthesia or sedation

Results showImmediately → 3+ months

1–4 weeks

1–3 months

How long it lastsWeeks → Years or permanent

3–6 months

Years or permanent

Visits neededOne → Every few months

A longer series (4–6+)

A short series (2–3)

Cost per visit$ → $$$$$

$$$$

ReversibleYes, can be undone → No, permanent

No, fades slowly

No, permanent

What is it?

Chemical Peel

Fractional CO2 Laser

What is it?

It is controlled exfoliation.

A chemical agent creates a controlled skin injury.

There are three depths.

Superficial, medium and deep peels differ in recovery and risk.

The acid name is not enough.

A peel is not defined by ingredient or percentage alone.

Deep peels need a medical setting.

Phenol peels carry serious systemic risks.

It is an ablative laser.

It creates microscopic columns of injury in the skin.

Untreated skin speeds healing.

Skin between the columns supports recovery.

It is intensive.

It is stronger than a facial but less than fully ablative resurfacing.

History matters.

Pigment, keloid, herpes and isotretinoin history need assessment.

What it treats

Evidence level

Chemical Peel

Fractional CO2 Laser

Strong evidenceMost established uses

—

Acne Scarring

Major improvement in many scar types.

Educational illustration of healed broad indented scars with defined edges on the left cheek, with the face turned to the person’s right on light skin.

Boxcar Scars

Smooths wide scars.

A relaxed forehead with faint shallow horizontal fine lines.

Wrinkles and Fine Lines

Tightens and smooths.

Moderate evidenceSome supportive research

Flat tan patches with soft irregular edges across the forehead and upper cheek of an adult with light skin, the surface completely smooth.

Melasma

Light peels help alongside creams.

Acne

Clears clogged pores.

Sun Spots

Fades spots.

Wrinkles and Fine Lines

Deeper peels smooth lines.

Sun Spots

Clears sun damage.

Little evidence

A relaxed forehead with pronounced deep horizontal furrows.

Deep Wrinkles

Light peels can't reach deep lines.

—

Can make it worse

Redness and fine superficial vessels across a light-skinned cheek and nose.

Rosacea

Very irritating.

Melasma

High risk of darkening.

Rosacea

Can worsen redness.

Treatment areas

Face; the selected area depends on the concern and treatment plan.

Skin tones

Skin tone

● Chemical Peel

● Fractional CO2 Laser

Lighter skin

Low risk

Light and medium peels suit most.

Some risk

Prolonged redness possible.

Medium skin

Some risk

Light peels are safer; dark marks possible.

Higher risk

Dark marks are common; pre-treatment helps.

Deeper skin

Higher risk

Stick to light peels with an experienced provider; deeper peels risk lasting dark or light patches.

Higher risk

Highest pigment risk of these treatments; low-density settings and an experienced provider are essential.

How it works

Chemical Peel

Fractional CO2 Laser

How it works

Chemical Peel mechanism diagram. The agent and depth are selected: The clinician matches the peel to the skin and concern. Controlled chemical injury occurs: The chosen agent acts on the planned skin layers. Skin heals and renews: Results and recovery depend on the peel depth and technique.

Fractional CO₂ Laser mechanism diagram. Creates tiny treatment channels: Laser energy absorbed by water removes narrow columns of tissue. Untreated skin supports healing: Skin between the channels helps the surface repair. Collagen remodels over time: Repair can improve selected scars, lines, and texture.

Diagram explanation

The agent and depth are selected: The clinician matches the peel to the skin and concern. Controlled chemical injury occurs: The chosen agent acts on the planned skin layers. Skin heals and renews: Results and recovery depend on the peel depth and technique.

Schematic illustration. Technique and response vary. This explains a mechanism and does not specify treatment settings.

Creates tiny treatment channels: Laser energy absorbed by water removes narrow columns of tissue. Untreated skin supports healing: Skin between the channels helps the surface repair. Collagen remodels over time: Repair can improve selected scars, lines, and texture.

Schematic illustration. Technique and response vary. This explains a mechanism and does not specify treatment settings.

Before your treatment

Chemical Peel

Fractional CO2 Laser

2–4 weeks before

2 weeks before: Sun and tanning: No tanning, no sunburn.

4 weeks before: Pigment cream: On deeper skin tones, a pigment-blocking cream first cuts the risk of dark patches.

Sun and pigment cream: No sun, and do not arrive tanned.

Sun and pigment cream: On deeper skin tones a pigment-blocking cream usually starts two to four weeks ahead.

Plan ahead: Time off and supplies: Book the time off, arrange a driver if sedation is planned, buy plain petrolatum and a gentle cleanser, and plan a week at home.

The week before

Actives and hair removal: Stop retinoids, benzoyl peroxide and acids 3 to 5 days before.

Actives and hair removal: No waxing, threading or hair removal creams.

Actives and smoking: Stop retinoids, benzoyl peroxide and acids.

1 to 2 days before: Antiviral tablets: Antiviral tablets start a day or two before and continue for several days after, since an outbreak in healing skin can scar.

Day of treatment

Chemical Peel

Fractional CO2 Laser

Arrival & prep

Skin is checked, photos taken, and you confirm what you have stopped using.

Skin is examined and photographed.

Treatment

Skin is cleaned and degreased, eyes and lips protected, acid brushed on in layers.

It stings and builds over 2 to 5 minutes, then gets neutralized. The visit takes 20 to 30 minutes. A light peel burns briefly and most people tolerate it; a medium peel is genuinely uncomfortable, and the burning can last an hour.

The handpiece is passed or stamped over each zone.

Expect rapid clicking, a burning smell, and a smoke evacuator running. Heat builds fast and feels hot rather than sharp. A full face takes 30 to 60 minutes, genuinely painful without proper anesthesia. The burning carries on for an hour or two.

Before you leave

Pink, tight skin, sometimes with mild swelling and stinging for a few hours.

Skin is deep red, hot, swollen and weeping clear fluid, with a fine grid pattern visible.

After your treatment

Chemical Peel

Fractional CO2 Laser

First 24 hours

Days 1 to 3: Skin darkens slightly, dry and rough.

Days 1 to 3: Swelling peaks on the first or second morning and can partly close the eyes.

Days 2–7

Days 4 to 7: Light peels finish flaking.

Days 3 to 14: The skin turns bronze or grid-patterned brown, then flakes and sheets off, showing bright pink skin.

Weeks 2–4

Weeks 1 to 2: Some people break out for a week or two as clogged pores clear.

Week 3 to Month 12: Redness fades slowly, a month on light settings and three months or longer on aggressive ones.

Time to results

1–2 weeks after each peel

1–3 months, improving to 6

How long results last

Months with good skincare

Years

Risks

Dark patches
Prolonged redness
A cold sore outbreak

Dark patches
Redness that will not settle
Pale or white patches
An acne or milia flare
Itching that is severe

Cost

Per session

A superficial salicylic or glycolic peel runs about $100 to $300 a session in the US, a medium-depth peel about $400 to $900.

A full-face session in the US usually runs $1,000 to $3,000, varying by city, device, depth, and whether sedation or an operating room is involved.

Insurance

Insurance rarely covers peels for acne or post-acne marks — they count as cosmetic.

Insurance does not cover resurfacing for acne scars, which is classed as cosmetic.

Questions

Chemical Peel

Fractional CO2 Laser

Individual Questions

Do chemical peels work for acne scars?

Not for indented scars. Peels fade the flat brown or red marks left after a spot — people call those scars, but they are discoloration. Depressed scars need microneedling, lasers, subcision, or filler.

Which peel is best for acne?

Salicylic acid, usually — oil-soluble, so it works inside the pore. Glycolic acid suits surface dullness and pigment. Some providers combine them, or use a salicylic-mandelic blend on deeper skin tones.

How many do I need?

4 to 6 sessions, 2 to 4 weeks apart, then maintenance. One peel gives a temporary glow.

Are peels safe on deeper skin tones?

Superficial salicylic and glycolic peels are, with good data behind them. Deeper peels can leave a lasting dark or light patch. Depth, not the acid, matters.

Will I actually peel?

Often not much, and that is fine. Sheeting does not mean it worked; mild flaking does not mean it did not.

How much downtime does fractional CO2 really need?

Five to ten days at home. Swelling and oozing days one to three, bronzing and sloughing days three to seven, and by day seven to ten the surface has closed and mineral makeup is usually allowed. Redness then fades over weeks to a few months.

Will it get rid of my acne scars?

It improves them substantially, more than any other single treatment, but it does not remove them. Rolling and boxcar scars respond best, icepick scars least, and mixed scarring usually needs subcision or TCA CROSS too.

Is it safe on deeper skin tones?

Experienced providers do it using lower density, longer intervals, and pigment creams before and after. Dark marks are common and fade over months. The rare risk of permanent pigment loss is why many people with deeper skin tones choose microneedling instead.

How many sessions will I need?

One to three, 6 to 12 weeks apart, judged six months after the last one.

Does it hurt?

Yes, without proper anesthesia. Numbing cream alone is not enough for a full face, so nerve blocks, injected anesthetic or oral sedation are standard, and burning continues for an hour or two afterward.

Can I have it before a wedding or a big event?

Only with months of margin. Skin looks worse before it looks better, and redness can last one to three months. Six months ahead is a reasonable minimum.

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