Chemical Exfoliation (Peels)
- Independent guide from The Hair & Beauty Directory
About Chemical Exfoliation (Peels)
A chemical peel uses a solution of acids to loosen and lift the outermost layers of skin, encouraging fresher cells to come through. It is a form of controlled exfoliation, and the depth of the peel decides both the result and the risks involved. Superficial peels use gentler alpha and beta hydroxy acids such as glycolic, lactic, mandelic or salicylic acid, and work mainly on the very surface to brighten dull skin, soften the look of uneven texture and support congested or oily skin. Medium peels, often based on TCA, reach a little deeper and target more established sun damage and pigmentation, with more downtime. Deep peels, such as phenol, are a medical procedure and belong only in a clinical setting under a doctor. A peel is best thought of as a way to refresh and even out healthy skin rather than a cure for any skin condition, and it works best as part of a wider skincare routine. Results build gradually, so superficial peels are usually done as a short course. What suits you depends on your skin type, your goals and how much recovery time you can allow, which is why a proper consultation matters.
On the day, and after
During the treatment
Your practitioner will start by cleansing and then degreasing the skin to remove oils, which helps the solution work evenly. Sensitive areas such as the corners of the nose, the eyes and the lips may be protected. The peel solution is then applied in a controlled way, usually with a brush or gauze, and left on for a set time that depends on the strength being used. With a superficial peel you will typically feel warmth, tingling or a mild stinging that settles within a few minutes. Some peels are timed and then neutralised or removed, while others self-neutralise. Your practitioner watches the skin closely throughout; with stronger peels a whitish frosting can appear, which signals depth and helps guide how far the treatment goes. A superficial session is usually quick, often around fifteen to thirty minutes including preparation. The skin is soothed afterwards and a broad-spectrum SPF is applied before you leave. You should never feel that the treatment is being rushed or pushed deeper than agreed.
How it feels
During a superficial peel most people feel a spreading warmth followed by a light tingling or stinging that builds and then eases within a few minutes. Some describe it as a prickly or itchy heat on the skin. Medium peels tend to sting more sharply and for longer, and your practitioner may use a fan or cool air to keep you comfortable. Afterwards the skin often feels tight, dry and slightly sensitive, a bit like mild windburn, for a day or two before any flaking begins. A brief, tolerable sting is expected; strong burning, deep pain or a feeling that something is very wrong is not, and you should tell your practitioner straight away so the solution can be removed.
Results and maintenance
Superficial peels work gradually and cumulatively, so a single session gives a fresh, brighter glow while more noticeable improvements in tone and texture usually build over a short course of around three to six sessions, spaced a few weeks apart. Because your skin keeps renewing and ageing, results are maintained rather than permanent, and many people continue with a peel every four to eight weeks or seasonally to keep the effect. Medium-depth peels give a stronger, longer-lasting change per treatment but with more downtime, and are done less often. How long your results last depends heavily on your daily habits, especially consistent sun protection and a good home routine, which do more than anything to protect your investment. Peels pair well with tailored skincare, and your practitioner can adjust the strength and frequency over time to match your skin and your goals, from a gentle radiance boost to a more focused course for pigmentation or texture.
Before and after your appointment
Before your appointment
Good preparation makes a peel safer and more even. Book a consultation first so your practitioner can assess your skin type, review your medical history and set honest expectations about what a peel can and cannot do. In the weeks beforehand you may be asked to prime the skin with prescribed home products, typically a gentle acid or a retinoid, to help the peel penetrate evenly and to calm the pigment-producing cells. Stop using strong actives such as retinoids, high-strength acids and exfoliating scrubs a few days before, as advised, and avoid recent waxing, threading, sunbeds or a fresh tan on the area. Sun exposure is a common reason to postpone, because tanned or sunburnt skin peels unpredictably and is more likely to react. Tell your practitioner about any history of cold sores, as a preventive antiviral may be recommended. Arrive with clean skin, free of make-up where possible, and flag any recent treatments, medications or changes to your health so the plan can be adjusted before anything is applied.
Aftercare
Gentle, patient aftercare protects your result. For the first day or two the skin may look slightly darker, feel tight and be a little pink. As it begins to flake or peel over the following days, let it shed naturally and resist any urge to pick, pull or scrub, as this is the most common cause of marks and scarring. Keep to a simple routine of a mild cleanser and a fragrance-free moisturiser, and pause retinoids, acids and exfoliating products until your skin has fully settled and your practitioner says it is safe to restart. Avoid heat, saunas, hot yoga, vigorous exercise and swimming for a few days, as sweat and heat can irritate fresh skin. The single most important step is daily broad-spectrum sun protection of at least SPF 30, reapplied through the day, because newly revealed skin is very vulnerable to pigmentation if exposed to UV. If you notice anything that concerns you, contact your practitioner rather than treating it yourself.
Downtime depends entirely on depth. A superficial peel usually involves little more than mild redness and light flaking for a few days, and many people return to normal activities straight away with SPF and gentle products. Medium-depth peels typically involve more visible peeling and redness for around a week, so it helps to plan them around your commitments. Deep peels are a medical procedure with a much longer, supervised recovery. Everyone heals at their own pace, and factors such as skin type and how well you protect the area all play a part. Autumn and winter are often preferred for a course, simply because it is easier to avoid strong sun while the skin recovers.
Safety and medical considerations
Safety essentials
A peel is only suitable on healthy skin with an intact barrier, so it is not the right choice over active eczema, broken skin, sunburn, an active cold sore or an infected or inflamed area. Choose a practitioner who is trained and insured for the specific peel and strength they are offering, and who carries out a proper consultation before treating you. Depth is everything: superficial peels are widely offered in beauty and aesthetic settings, but medium and especially deep peels carry higher risks and belong with suitably qualified practitioners, with deep phenol peels being a medical procedure performed under a doctor because they can affect the heart rhythm and require close monitoring. People with darker skin tones typically face a higher risk of post-inflammatory pigmentation, so conservative choices and careful assessment matter. A responsible practitioner will start gently, build up over sessions rather than going too deep too soon, and give you clear written aftercare and a way to reach them if you have concerns.
Medical considerations
Share your full medical history at consultation, as several situations make a peel unsuitable or something to postpone. Recent use of the acne medication isotretinoin (Roaccutane) is a key one, as the skin needs a generous gap, often around six months, before peeling to reduce the risk of poor healing and scarring; your prescriber can advise. Pregnancy and breastfeeding are usually a reason to wait, as a precaution. A history of cold sores can be reactivated by a peel, so a preventive antiviral may be suggested. Tell your practitioner about any tendency to keloid or abnormal scarring, active skin conditions such as eczema, psoriasis or rosacea, recent facial treatments, and any autoimmune conditions or medications that affect healing or sun sensitivity. A peel is a cosmetic treatment and is not a substitute for medical care; if you have a skin concern that may need diagnosis or treatment, such as a changing mole or persistent breakout, see your GP or a dermatologist first.
Patch testing
A skin patch test is not always routine for peels, but a careful consultation with a test area is an important safeguard and helps reduce risk. Your practitioner should assess your skin type and history, and for a first peel or a stronger formula may apply a small amount to a discreet area to check how your skin responds before treating the whole face. This matters because reactions can vary, and darker skin tones in particular can be prone to pigmentation changes. Under UK practice, skipping proper pre-treatment checks can leave an insured practitioner exposed if a claim arises, so a thorough consultation, honest disclosure of your history and a cautious approach on first treatment protect both you and the practitioner. Remember that no single check is fully conclusive, and sensitivities can develop over time, so always flag any change in your skin or health.
Knowing a good practitioner
Green flags
Good practice starts with an unhurried consultation that covers your skin type, goals, medical history and realistic expectations. A responsible practitioner is trained and insured for the exact peel and strength they offer, explains which peel suits you and why, and is honest about what it can and cannot achieve. They prepare the skin properly, protect sensitive areas, watch your skin closely throughout and stop at the agreed depth rather than pushing further. They start conservatively, especially on a first visit or with darker skin tones, and build results over a sensible course. You should be given clear written aftercare, strong guidance on daily SPF, and a way to reach them if you have any concerns. Referring medium or deep peels to appropriately qualified or medical practitioners is a sign of someone working within their scope.
Red flags
Be cautious if a practitioner offers a peel without any consultation or questions about your medical history, medications or previous reactions. It is a warning sign if there is pressure to go stronger or deeper than you are comfortable with, no discussion of aftercare or sun protection, or no clear way to contact them afterwards. Applying a peel over active cold sores, broken or sunburnt skin, or ignoring recent isotretinoin use, suggests corners are being cut. Vague or exaggerated promises to cure a skin condition, remove scars completely or deliver dramatic results from a single gentle peel are not realistic. Deep peels offered in a non-medical, unmonitored setting should be avoided. During treatment, severe burning, blistering or intense pain beyond a brief sting is not normal and the solution should be removed and the concern taken seriously.
Questions to ask
- What type and strength of peel are you recommending for my skin, and why is it suitable for me?
- What training, qualifications and insurance do you hold for this specific peel?
- How should I prepare my skin beforehand, and are there any products or treatments I need to stop first?
- What downtime should I expect, and how much peeling or redness is normal for this peel?
- Given my skin tone and history, what is my risk of pigmentation changes or scarring, and how do you reduce it?
- What aftercare will you give me, and how do I reach you if I have a problem afterwards?
Frequently asked questions
Do chemical peels hurt?
A superficial peel usually feels like warmth followed by tingling or mild stinging for a few minutes, which most people tolerate easily. Stronger peels sting more and may need cooling air for comfort. Sharp, lasting burning is not normal, so tell your practitioner if you feel it.
Will my skin actually peel and flake?
Not always in a dramatic way. Light superficial peels often cause only mild flaking or none at all, while medium peels involve more visible shedding over about a week. Whatever happens, let the skin shed naturally and avoid picking, as picking is a common cause of marks.
How soon will I see results, and how many sessions do I need?
You may notice a fresher glow after one superficial peel, but clearer improvements in tone and texture usually build over a short course of around three to six sessions. Your practitioner can advise on the right number and spacing for your skin and goals.
Can I have a peel if I have darker skin?
Often yes, but darker skin tones typically carry a higher risk of pigmentation changes, so it is especially important to see an experienced practitioner who chooses a gentle, suitable peel, starts conservatively and stresses daily sun protection to reduce that risk.
Are chemical peels safe during pregnancy?
Most practitioners will postpone peels during pregnancy and breastfeeding as a precaution. Always mention if you are pregnant, trying to conceive or breastfeeding at consultation so your practitioner can advise on timing and, if needed, safer alternatives.
This guide is general information, not medical advice. Speak to a qualified practitioner, and to your GP if you have a medical condition, before booking.