In short. Ablative resurfacing with CO2 or erbium should be declined when the skin is not in a state to be wounded, when there is a scarring tendency or recent isotretinoin, or when the recovery it requires is not available. Both lasers are ablative, so one list of reasons covers them both.

Key points

  • Both lasers are ablative, so one list of reasons to decline covers them both.
  • Active acne, infection, an open wound or a flare of eczema are reasons to wait.
  • A keloid history makes an ablative wound in the same area a poor idea.
  • The recovery is not optional and cannot be compressed by shortening it.
  • A treatment that reaches less and heals faster is a correct answer, not a compromise.

Why both ablative lasers share one list of reasons to decline

Because both lasers are ablative, there is one list of reasons to decline them rather than two. Each of those reasons is a reason to decline the other option as well. A clinic that offers the shallower laser to a patient who should not be resurfaced at all has changed the equipment rather than the answer.

When is the skin not in a state to be wounded?

Active acne, an active infection, an open wound, a flare of eczema, psoriasis or rosacea in the area, and any inflamed or broken skin are all reasons to wait. An ablative treatment on skin in that state spreads the problem, delays healing and adds infection risk to a wound that is already compromised. The condition is treated and settled first, and the resurfacing plan follows when the skin is quiet. This is a delay with a purpose, not a lost opportunity.

Does a scarring tendency or recent isotretinoin change the answer?

A history of keloid or hypertrophic scarring makes an ablative wound in the same area a poor idea, because the treatment may produce the kind of scar it was meant to improve. Recent treatment with isotretinoin for acne is a separate consideration that changes healing and is assessed case by case. Both are things the clinic has to know about, and both are reasons why a full medication and scarring history belongs in the assessment rather than in a form filled in afterwards.

When the recovery cannot be given

The most common honest refusal has nothing wrong with the skin. A patient who cannot spend a week or more with a raw face, who cannot keep out of the sun for the weeks afterwards, or whose work makes a long pink phase impossible is not a candidate for ablative treatment, whatever the examination shows. There are treatments that reach less and heal faster, and choosing one of them is the correct answer rather than a compromise.

Reason to decline What it looks like Why resurfacing is the wrong answer What to do instead
Active skin disease Active acne, an open wound, or infected and inflamed skin Spreads the problem, delays healing and adds infection risk Treat and settle the condition first
A condition in flare Eczema, psoriasis or rosacea flaring in the area It adds infection risk to a wound that is already compromised Wait until the skin is quiet
A scarring tendency A history of keloid or hypertrophic scarring The treatment may produce the kind of scar it was meant to improve Declare the history at the assessment
Recent isotretinoin Recent acne treatment with isotretinoin It changes healing and is assessed case by case A specific plan for that history
A recovery the patient cannot give Cannot spend a week or more with a raw face, or keep out of the sun for weeks The recovery is not optional and cannot be compressed A treatment that reaches less and heals faster
The wrong problem: loose skin Skin that is genuinely loose Resurfacing changes the surface of skin that still sits where it sat Repositioning
The wrong problem: volume or movement Volume loss, or lines that appear only in movement Resurfacing does not restore volume or relax muscle Volume, or a muscle-relaxing injection
A date on the calendar Treatment timed to an event, or requested after someone else's remark The healing weeks cannot satisfy that Postpone the decision

When resurfacing addresses the wrong problem

Skin that is genuinely loose needs repositioning, not resurfacing. Volume loss needs volume. Lines that appear only in movement belong to a muscle-relaxing injection. In each of those cases the resurfacing would produce a change in the surface of skin that still sits where it sat and still lacks what it lacks. Declining is the clinical answer, and naming the treatment that fits the finding is more useful than a plan assembled from what the clinic offers.

Why a date on the calendar is a reason to wait

There is one further category that is less clinical: the patient whose treatment is being timed to an event, or requested because of someone else's remark. Ablative resurfacing is among the least forgiving treatments to arrange around a date, and a decision made for someone else's approval is one the healing weeks cannot satisfy.

Reasons to decline both ablative options

  • Active infection, open or inflamed skin, or a skin condition in a flare in the area to be treated.
  • A keloid or hypertrophic scarring tendency, or recent isotretinoin treatment, without a specific plan for that history.
  • A recovery the patient cannot give, or a problem that resurfacing does not address at any depth.

Sources

Internal links

Frequently asked questions

Can I have resurfacing if I have active acne?

Not while it is active. An ablative treatment on inflamed skin spreads inflammation, delays healing and adds infection risk, and the acne itself is what needs treating first. Once it is settled, the scarring that acne leaves is often a good reason to consider resurfacing, and that is a plan made afterwards rather than during.

Does a history of cold sores matter?

It does. An ablative wound can provoke an outbreak, and an outbreak during healing can leave a scar, which is why a history of cold sores is asked about and usually treated preventively around the procedure. It is not a reason to decline, and it is a reason the plan should include something specific for it.

What if I cannot take a week off work?

Then the deeper ablative option is the wrong treatment for you at this time, and the honest answer is a treatment with a shorter recovery that reaches less. The recovery is not optional and it cannot be compressed. A clinic that offers to shorten it for you is offering to compromise the thing that makes the treatment work.

Risks & Limitations

  • Both options are ablative: each removes a layer of skin deliberately and leaves a wound that must heal.
  • Treated skin can heal darker or lighter than it was. The risk is higher in darker skin, with more heat, and with sun exposure during healing.
  • Redness after the deeper option lasts weeks, and the raw phase can last a week or more.
  • Infection and delayed healing are uncommon and are why the depth and the aftercare matter; a cold sore flare during healing can leave a scar.
  • Choosing too shallow a depth spends the healing without changing the wrinkle, which is a real risk of the shallower option.

When to Seek Care

  • Redness that is worsening rather than fading, or skin that has become broken, blistered or discharging.
  • Increasing pain, increasing warmth, or fever with a spreading redness.
  • A cold sore outbreak during healing, or pigmentation that is deepening rather than settling.
  • Difficulty breathing or chest pain — seek emergency care immediately.

References & Further Reading

  • American Society of Plastic Surgeons (ASPS) — procedure and safety guidance
  • National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
  • Cochrane Library — systematic reviews
  • American Academy of Dermatology (AAD) — laser and pigment guidance
  • Chinese Medical Association Plastic Surgery Branch — clinical guidance

Medically reviewed by Ke He, MD (何锞), Deputy Director & Head of Skin & Laser Aesthetics. Last reviewed: 19 September 2026.

This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.