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The Definitive Guide to Chemical Peels
Chemical peels use a controlled application of acid to exfoliate the skin and trigger renewal. Depending on their strength, they can brighten Dull Skin (Going Here), soften fine lines, fade hyperpigmentation and improve acne and . peels are gentle and need a course. Deeper peels do more but carry more and risk. Like most resurfacing treatments, peels work best as part of a wider plan built around the right prescription topicals, rather than as a one-off fix.
Please note, we are an entirely online skin and hair clinic, so we do not offer chemical peels. We used to provide them at our former physical clinic, but we now exclusively offer topical skincare treatments that peels work best alongside.
What is a Chemical Peel?
A chemical peel is a solution of one or more acids to the skin to remove its outer layers in a controlled way. This sounds dramatic, but it is simply a faster version of something the skin does anyway. By dissolving the bonds between dead surface cells, a peel . Deeper peels reach further and can even stimulate fresh collagen production. The acids for chemical peels fall into a few families:
The mechanism by which they work is why peels vary so much in what they can do.
What Are the Different Types of Chemical Peels?
Peels are grouped by how deeply they work. Depth determines both what a peel can achieve and how much downtime and risk it carries. There are three broad categories:
A useful rule runs through all three. The deeper a peel goes, the more it can achieve, but the more downtime and risk it carries. This is why the right peel depends entirely on the concern, the skin type and the hands applying it.
What Do Chemical Peels Treat?
Because the family spans such a range of depths and acids, peels can address a wide spread of concerns. The trick is matching the right acid and depth to the problem. The main uses for chemical peels are to treat:
It is worth being realistic about results. Peels improve the skin you have, but they do not change its underlying tendencies. Acne, hyperpigmentation and ageing can return if the original triggers remain, so daily sunscreen and a good routine matter as much as the peel itself.
Are Chemical Peels Safe for Darker Skin?
Peels can be used safely in darker skin, but the choice of acid matters enormously. The reason is that any treatment which inflames the skin can trigger in darker skin tones. The deeper and more aggressive the peel, the higher that risk.
A few principles keep peels safe in skin of colour. Superficial peels are the safest choice. Of these, , partly because it is anti-inflammatory in its own right. Mandelic and lactic acid are also gentle, because their larger molecules penetrate slowly and evenly. acid is effective too, and . However, it is a small, fast-penetrating molecule, so it irritates more readily. For that reason it is started at a lower strength, built up gradually and usually paired with a targeted topical skincare routine. By contrast, medium-depth TCA peels carry a documented risk of in darker skin and need real caution. One review of high-strength glycolic and TCA peels in Fitzpatrick V to VI .
Two further things lower the risk. Priming the skin beforehand with a pigment-suppressing topical (such as , or ) can reduce hyperpigmentation. Also, the experience of the practitioner matters more than anything. If you have a deeper skin tone, choose someone who treats skin like yours regularly. Our posts on and go into this in more depth.
Do Chemical Peels Treat Melasma?
deserves its own note of caution. It is a chronic, relapsing form of hyperpigmentation driven by hormones, heat and UV light. It is also easily . chemical peels can help fade melasma as part of a wider plan. Glycolic, and mandelic peels are the gentlest options. In fact, topical azelaic acid and adapalene improve stubborn melasma. However, peels also cause inflammation, and inflammation can restimulate the very pigment cells that drive melasma. This is why an peel can leave melasma worse than before, and why medium-depth peels are generally considered high-risk here.
The bigger issue is that melasma comes back. In one study of peels in darker skin, . For most people, then, melasma is better managed first with prescription topical treatment and strict sun . A gentle peel is a supportive adjunct but can never be the main treatment. Actives like , and target the pigment directly. Our posts on and explain how to keep it under control for the long term.
Can Chemical Peels Treat Acne & Acne Scars?
Peels have two distinct roles in acne, and it helps to separate them. For active acne, salicylic acid chemical peels are the mainstay. As a beta hydroxy acid, oil-soluble, so it penetrates pores to clear debris, reduce sebum and calm inflammation. Glycolic and mandelic peels and Jessner’s solution can help here too. That said, peels are an adjunct to proper acne treatment, not a replacement, and most people get further with prescription topicals first.
For acne scarring, peels come into their own as part of a combination. Medium peels can soften the texture of pitted scars by stimulating . Crucially, the evidence points to combinations working best. A found that microneedling combined with peels produced the best results of any combination tested for atrophic acne scars. We explain how the two work together in more detail in our post on . For most people, the best results come from an approach that clears the acne first, then addresses any scarring once breakouts settle.
What Does a Chemical Peel Involve?
A professional peel always starts with a consultation to assess your skin and choose the right peel and strength. The treatment itself is straightforward. Your practitioner cleanses the skin and applies a prep to remove oils, then applies the peel with a brush, gauze or cotton pad. Sometimes they layer it for a stronger effect. The peel is left on for a set time that depends on its type and how your skin responds. A glycolic peel, for example, is usually left on for only a few minutes. Some peels are then neutralised to stop them working, whilst others self-neutralise.
Downtime depends entirely on depth. A superficial peel causes little more than a few hours of mild redness, so it suits a quick refresh. A medium peel involves visible flaking and peeling for around a week as the skin renews. A deep peel needs weeks of recovery and careful aftercare. Whatever the depth, the skin is more vulnerable to UV afterwards, so daily sunscreen is essential to protect the result and prevent further hyperpigmentation. Our guide to covers how to look after your skin in the days that follow.
Can You Do Chemical Peels at Home?
At-home peels exist, but they are less powerful, and that is a good thing. Consumer products use low concentrations of gentle acids, so they work only on the surface. Used sensibly, they can brighten and smooth much like a mild peel. They will not match a professional peel, and they cannot safely reach the depth needed for scarring or stubborn hyperpigmentation. The acids worth for, and the strengths to expect in safe at home chemical peels are:
A few simple rules can keep home use safe. Always buy from reputable skincare brands and pharmacies, and steer clear of "professional" peels sold to the public online. These can cause burns and damage skin so belong in a clinic. work best at a pH of around 3.5 or above, so a well-formulated product matters more than a high percentage. Patch test first, start once a week or every other week and avoid using acids and retinoids on the same night. Never peel broken or irritated skin. Above all, do not chase visible peeling, because . Checkout our posts on and for more on how to use them properly.
What Are the Alternatives to Chemical Peels?
A peel is rarely the only way to treat a given concern, and it is often not the first choice. For most everyday skin concerns, topical agents do more of the heavy lifting. However, the right ingredient depends on what you are treating:
There are also a few skin procedure alternatives to chemical peels. Microdermabrasion is the gentlest, buffing away the surface layer with fine crystals or a diamond tip rather than acid. It has no downtime and helps with dullness and texture, though it cannot reach deep enough for scarring or stubborn hyperpigmentation. collagen through controlled micro-injury rather than acid, and it pairs particularly well with peels for . uses light to resurface and build collagen, and it has largely replaced deep peels for severe concerns. The right choice depends on your concern, your skin type and your tolerance for downtime.
Where to Get Chemical Peels in the UK
You can buy at home chemical peel products from most reputable skincare brands. Professional chemical peels are not available on the NHS but many private skin clinics and med spas offer them. They usually charge per session and often if you buy a course upfront, it works out cheaper. A deeper peel usually costs more than a superficial one. If you are considering a peel, the experience of the practitioner matters most, particularly for darker skin or for treating melasma. Look for someone who assesses your skin properly and explains the risks honestly. It is also worth knowing that a peel is often not the right first step. Many of the concerns people seek peels for, including , and , usually respond well to topical treatment. This is frequently a safer and cheaper place to start.
At City Skin Clinic, we provide bespoke topical skincare using ingredients like , , and where appropriate. Our doctors design a plan around your skin. You can read more about our custom treatments for , , and , or to start. The journey towards great skin .
This article is for general information only and is not a substitute for medical advice, diagnosis or treatment. Chemical peels should only be carried out by a qualified and experienced practitioner after an individual assessment. Always consult a qualified medical professional about your skin or treatment options.
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