What Are Chemical Peels

Chemical peels have been around for decades, yet they remain one of the most misunderstood treatments in aesthetic medicine. Some people picture dramatic, raw skin and weeks of hiding indoors. Others assume a 'peel' is just a fancy term for an expensive face mask. The truth sits somewhere more practical: a chemical peel is a controlled, acid-based treatment that removes a precise layer of skin to prompt fresher, more even skin to surface. Done at the right depth for the right concern on the right skin tone, the results are well-documented. Done without that matching, the risks - especially post-inflammatory hyperpigmentation (PIH, or dark patches triggered by skin trauma) - are equally real. This guide walks you through exactly how peels work, what the three depth tiers mean for your skin, and the questions worth asking before you book.

How chemical peels work

A chemical peel applies an acidic solution to the skin for a set contact time. The acid disrupts the bonds holding dead and damaged skin cells together, causing controlled exfoliation and - depending on depth - triggering the skin's wound-healing response. That healing response is where the real benefit lies: the skin produces new collagen, sheds uneven pigmentation, and resurfaces with a smoother texture.1

1. 1Acid application - the solution is applied to cleansed skin at a controlled concentration and pH.
2. 2Cell bond disruption - the acid breaks down bonds in the target layer, whether epidermis only or reaching into the dermis for deeper peels.
3. 3Skin response - the skin accelerates cell turnover and, for medium and deep peels, triggers collagen remodeling.
4. 4Shedding - the treated layer sheds over days to weeks, revealing newer skin beneath.
5. 5Pigment redistribution - melanin shifts as the skin repairs, which is why peels can improve uneven tone - but also why incorrect depth or aftercare can worsen it.

The three depth tiers

Peel depth determines what concerns a peel can address, how much downtime you face, and how much care is needed around skin tone. Depth is controlled by acid type, concentration, and contact time - not just by the name on the bottle.

What chemical peels treat - and what they do not

Peels cannot remove raised (hypertrophic) scars, treat active nodular acne, or permanently remove deep-set wrinkles. For concerns like these, a combination approach - or a different treatment pathway - tends to deliver better outcomes.2

Which peel is right for you

Skin tone, skin type, and underlying health history all shape which peel depth is appropriate for you. A board-certified dermatologist or licensed aesthetic practitioner will assess these factors at consultation. Here are the headline considerations to understand going in.

• Skin tone (Fitzpatrick scale): Lighter tones (Fitzpatrick I-III) generally tolerate medium and deep peels with lower risk. Darker tones (IV-VI) carry a significantly higher risk of PIH from deeper peels - see the dedicated section below.
• Active skincare: Retinol, tretinoin, and other actives can sensitise the skin and affect how it responds to acid. Your practitioner will typically ask you to pause these 5-7 days before treatment.
• Isotretinoin (Accutane) history: Most guidelines recommend waiting 6-12 months after finishing a course before any medium or deep peel, due to impaired wound healing.3
• Pregnancy and breastfeeding: Many peel acids are not recommended during pregnancy. Discuss this with your practitioner.
• History of cold sores (HSV-1): Medium and deep peels can trigger a herpes simplex outbreak. Prophylactic antiviral medication is standard practice before deeper peels.
• Fitzpatrick IV-VI, melasma, or a history of PIH: These warrant a conservative, step-up approach starting at the superficial tier.

Chemical peels and darker skin tones

This deserves its own section, because it is where the most important decisions get made - and where careful matching of depth to skin tone matters most. Skin on Fitzpatrick scale IV-VI has more active melanocytes (the cells that produce pigment). Any trauma to the skin, including a peel that goes too deep or is not followed by adequate sun protection, can trigger PIH - dark patches that can take months to fade and may, in some cases, be persistent.1

This does not mean peels are off-limits for darker skin tones. It means the selection criteria are more specific. If pigmentation is your primary concern, the depth and acid choice matter even more than they do for texture alone.

• Superficial peels are generally the safest starting point for Fitzpatrick IV-VI - particularly mandelic acid (a larger-molecule AHA that penetrates more slowly) and salicylic acid (which has a strong safety record across skin tones).2
• Lactic acid is another lower-irritation option often used as an entry-level peel for hyperpigmentation concerns on darker skin.
• Medium peels on darker skin tones require significant practitioner experience with this skin type. Jessner's solution followed by low-percentage TCA, used carefully, has evidence for improving pigmentation on Fitzpatrick IV-VI - but the margin for error is narrower.
• Deep phenol peels are generally contraindicated for darker skin tones due to the high risk of permanent depigmentation (skin lightening) and PIH.
• Pre-treatment priming - typically 4-6 weeks of a topical regimen including agents like hydroquinone, kojic acid, or azelaic acid - is standard practice before any peel on darker skin, to suppress melanocyte reactivity.2
• Strict sun protection after treatment is non-negotiable. In Dubai's climate, where UV index regularly exceeds 10-11, even incidental sun exposure in the post-peel window can trigger PIH regardless of skin tone.

What to expect: consultation to recovery

At consultation

A thorough consultation reviews your skin concerns, current skincare routine, medical history, and any active skin conditions. The practitioner should assess your skin tone and discuss realistic outcomes for your specific concern - not a generic 'before and after'. This is the moment to ask all the questions in the checklist below.

During the treatment

The skin is cleansed and degreased. The acid is applied evenly, often in layers for medium peels. You will feel tingling, stinging, or warmth - the sensation varies by acid type and depth. Superficial peels often have a fan or neutralising rinse to stop the reaction. Medium peels may be timed and then neutralised. The whole session typically takes 30-60 minutes.

Aftercare

• Keep skin moisturised and do not pick. If you pull off peeling skin before it is ready, you risk scarring and PIH.
• Avoid active ingredients (retinol, vitamin C serums, AHAs/BHAs) until your practitioner clears you - typically 1-2 weeks post-peel.
• SPF 50+ every morning without exception, applied generously and reapplied if you are outdoors. This is the single most important step in protecting your results.
• Avoid heat, saunas, and heavy exercise for the first 48-72 hours after medium or deep peels - heat increases inflammation and PIH risk.
• No active makeup on peeling skin - it can trap bacteria and irritate the healing barrier.

When you will see results - and how long they last

For superficial peels, skin looks brighter and feels smoother within a few days once the mild flaking settles - but a series of 4-6 sessions spaced 2-4 weeks apart typically delivers the most noticeable improvement in texture and tone.1 Medium peels produce visible change after a single session, with results continuing to improve over 4-8 weeks as collagen remodels. Deep peels have the most dramatic one-time impact, with skin continuing to improve for up to six months.

No peel result is permanent. Sun exposure, natural skin ageing, and hormonal changes (especially relevant for melasma) can return the concern over time. Maintenance - whether ongoing SPF discipline, a home retinoid routine, or periodic superficial peels - is part of the long-term picture.

What chemical peels cost in the UAE

Superficial peels are sometimes packaged in series (e.g., 4-6 sessions) at a discount versus individual session pricing - worth asking about if your concern requires a course of treatment rather than a one-off.

Questions to ask at your consultation

How to evaluate what you read about peels

A few patterns are worth knowing when you are comparing options:

• 'No downtime peel' is a description of depth, not a guarantee. Superficial peels genuinely do have minimal downtime. If you see a medium-depth TCA marketed as 'no downtime', ask the practitioner to clarify exactly what percentage and contact time they use - the label and the clinical reality should match.
• Before-and-after photos should show your skin tone. Results on Fitzpatrick I-II skin do not tell you how the same peel performs on Fitzpatrick V. Ask to see comparable cases.
• 'Medical-grade' on a peel label means higher concentration, not better outcomes. A higher-concentration acid applied without the right skill and assessment produces worse results than a lower-concentration one applied precisely.
• Series pricing commitments should come with a clear policy on what happens if you react. Ask before you pay upfront for a course.