Korea Beauty Guide

What Is a Chemical Peel?

A chemical peel applies an acid solution to remove layers of skin in a controlled way. The term covers an enormous range, from superficial peels with essentially no downtime to deep peels that are significant medical procedures. Depth is the variable that matters most, and almost every disagreement about peels comes from two people meaning different depths.

Last updated: September 3, 2026

The three depths

Peels are grouped by how far into the skin the solution works. That single variable drives the downtime, the cost, the risk profile and who is legally allowed to perform it. Nothing else about a peel matters as much.

SuperficialMediumDeep
ReachesOuter layerOuter plus upper mid layerDeeper layers
DowntimeHours to 1 - 3 days5 - 10 daysWeeks
Common acidsGlycolic, salicylic, lactic, mandelicTCA, stronger glycolicPhenol, high-strength TCA
Performed byEsthetician (state-dependent) or clinicianUsually a clinicianPhysician, often with sedation
SessionsOften a series1 to a fewUsually one
Cost$100 - 250$250 - 600$1,500 - 6,000+
Risk profileLowerModerateSignificant

"I am getting a chemical peel" tells you almost nothing on its own. A superficial glycolic peel on a Friday lunch break and a phenol peel with a physician and weeks of recovery are both accurately described by that sentence. When you read a review, a horror story or a rave, the first question is always which depth.

What actually happens in the appointment

The sequence is broadly the same at every depth. What changes is how carefully each step is timed and how much preparation happened in the weeks beforehand.

StepDetail
ConsultationSkin assessment, medical history, contraindications
PreparationSometimes weeks of pre-treatment skincare before the appointment
Cleanse and degreaseOil on the skin changes how the acid behaves
Solution appliedTimed carefully, often in layers
Neutralise or self-neutraliseDepends on the acid used
Post-careCooling, bland moisturiser, sun protection

The preparation step is the one people skip past. Some protocols ask you to use specific products for several weeks first, and the reason is not upselling — it changes how evenly the acid penetrates. If a provider gives you a pre-treatment routine, following it is part of the treatment rather than an optional extra.

The acids, and what they are generally used for

Providers choose an acid based on your skin and the concern being addressed, not on which one is strongest. The table below is orientation only — the selection is a professional judgement.

AcidTypeCommonly discussed for
GlycolicAHA, small moleculeSurface texture, dullness
LacticAHA, gentlerSensitive or dry skin
MandelicAHA, large moleculeSlower penetration, often chosen for reactive skin
SalicylicBHA, oil-solubleOily and congested skin
TCAUsed across depthsMedium-depth work at higher strengths
PhenolDeep onlyPhysician-performed procedures

Who can perform them varies by state

This is genuinely different from state to state. Superficial peels commonly fall within the esthetics scope of practice; medium and deep peels typically do not. Many states define the boundary by acid concentration and pH rather than by the word "superficial", which means the answer is not intuitive and you have to read the actual rule.

As a client, the practical version of this is short: ask what depth the peel is, and ask what licence the person performing it holds. Both questions are normal, and a competent provider answers them without hesitation.

Skin tone considerations

Chemical peels carry a risk of post-inflammatory hyperpigmentation, and that risk profile differs by skin type. Some acids and depths are approached differently for deeper skin tones, and the pre-treatment protocol may differ as well.

All skin types can be treated. What changes is the approach, the depth chosen and how conservatively a provider escalates. Seek a provider experienced with your specific skin type and ask directly what they adjust. This is not a detail to skip, and a provider who treats it as a real question is the one to book with.

Setting realistic expectations

Peels are used for surface texture, tone and congestion concerns. They are not a single-session fix for anything, and superficial peels in particular are usually recommended as a series precisely because each one does a modest amount.

  • Superficial peels are cumulative. One is a facial with an acid step; six over three months is the actual treatment plan.
  • Medium peels do more in one appointment, at the cost of a week where you visibly look like you had something done.
  • Deep peels are a medical procedure, planned months ahead, with a recovery that dominates your calendar.
  • Nothing here stops the clock. Skin keeps ageing, and sun exposure undoes progress faster than any peel makes it.

How to decide which depth

You do not decide this yourself, but you do decide which constraints to bring to the consultation. Being clear about them gets you a better recommendation.

Bring to the consultationWhy it changes the recommendation
How many days of visible peeling you can acceptThis alone often settles superficial vs medium
Any event in the next two monthsTiming constrains depth more than anything else
Your full skincare routine, including activesRetinoids and acids change the plan
Medication history, especially isotretinoinA common reason to wait
Previous pigmentation after inflammationDirectly affects depth and acid choice
Budget for the whole plan, not one sessionA series of six is the real number

If a provider recommends a depth you were not expecting, ask what they would expect to see afterwards and how long the visible phase lasts. A specific answer is a good sign. Vagueness about downtime is the most common source of disappointment with peels, and it is almost always avoidable.

Frequently asked questions

Q.What is a chemical peel?

A controlled application of an acid solution that removes layers of skin. Depths range from superficial, with almost no downtime, to deep procedures needing weeks of recovery.

Q.How deep should mine be?

That is a provider assessment based on your skin, your history and what you want to address. Bring your downtime tolerance and any upcoming events to the consultation.

Q.Is it painful?

Superficial peels typically sting briefly. Deeper peels involve more discomfort and more management, up to sedation at the deepest end.

Q.Who can perform one?

It depends on depth and state. Superficial peels often fall within esthetics scope; medium and deep peels typically require medical qualification.

Q.Is it suitable for all skin tones?

All skin types can be treated, but approach and pigmentation risk differ. Seek a provider experienced with your specific skin type and ask what they adjust.

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