Understanding Chemical Peels — Types, Benefits, and Recovery

Last updated: 5 March 2026

What Are Chemical Peels?

Chemical peels are one of the oldest and most trusted treatments in aesthetic dermatology, with roots stretching back to ancient Egypt. Today, they remain one of the most effective ways to rejuvenate the skin, addressing everything from fine lines and sun damage to acne scarring and hyperpigmentation.

A chemical peel involves applying a carefully formulated acid solution to the skin, which causes controlled exfoliation of damaged outer layers. As the old skin peels away over the following days, it reveals the fresher, smoother, more evenly toned skin beneath. At Axiom Aesthetics on Harley Street, London, we offer a range of professional-grade chemical peels tailored to every skin type and concern.

How Do Chemical Peels Work?

Chemical peels work by disrupting the bonds between dead and damaged skin cells, causing them to shed in a controlled manner. Depending on the depth of the peel, this process also stimulates the production of new collagen and elastin in the deeper layers of skin, resulting in firmer, more youthful-looking skin over time.

The depth of a chemical peel is determined by several factors:

• The type and concentration of acid used
• The pH of the solution
• The length of time the solution is left on the skin
• The number of layers applied
• Your individual skin type and condition

The Three Depths of Chemical Peels

1. Superficial Peels (Lunchtime Peels)

Superficial peels target only the outermost layer of skin (the epidermis). They are the gentlest option and are ideal for maintaining healthy skin, treating mild concerns, and as an introduction to chemical peels.

Common Acids Used

• Glycolic acid (AHA) — Derived from sugar cane; excellent for brightening and fine lines
• Lactic acid (AHA) — Derived from milk; gentler than glycolic, good for sensitive skin
• Mandelic acid (AHA) — Larger molecule size means slower penetration; suitable for darker skin tones
• Salicylic acid (BHA) — Oil-soluble, making it particularly effective for acne-prone and oily skin

Best For

• Dull, lacklustre skin
• Mild uneven skin tone
• Early fine lines
• Mild acne and congestion
• General skin maintenance

Recovery

• Downtime: Minimal to none — mild redness for a few hours
• Peeling: Light flaking for 1 to 3 days (some patients experience no visible peeling)
• Return to normal activities: Same day
• Makeup: Usually fine after a few hours
• Recommended course: 4 to 6 treatments, spaced 2 to 4 weeks apart

2. Medium-Depth Peels

Medium-depth peels penetrate through the epidermis into the upper portion of the dermis (the papillary dermis). They deliver more significant results than superficial peels and stimulate meaningful collagen production, but require more recovery time.

Common Acids Used

• TCA (Trichloroacetic Acid) at 15 to 35% — The workhorse of medium-depth peels; versatile and effective
• Jessner solution + TCA — A combination approach that enhances penetration and evenness
• Higher-concentration glycolic acid (50 to 70%) — More aggressive than superficial glycolic peels

Best For

• Moderate sun damage and photoageing
• Age spots and hyperpigmentation
• Moderate fine lines and wrinkles
• Acne scarring (shallow to moderate depth)
• Melasma (with careful patient selection)
• Rough, uneven skin texture

Recovery

• Downtime: 5 to 7 days of significant peeling
• Day 1 to 2: Skin feels tight and looks red or brown
• Day 3 to 5: Peeling begins and can be quite dramatic
• Day 5 to 7: Peeling resolves, revealing pink, fresh skin
• Week 2 to 4: Pinkness fades gradually
• Return to work: 5 to 7 days for most patients
• Recommended course: 1 to 3 treatments, spaced 3 to 6 months apart

3. Deep Peels

Deep peels penetrate into the mid-to-lower dermis (reticular dermis) and produce the most dramatic results. They are the most aggressive form of chemical peel and are reserved for significant skin concerns. Deep peels are medical procedures that require careful patient selection, preparation, and aftercare.

Common Acids Used

• Phenol (carbolic acid) — The classic deep peel agent; exceptionally powerful
• High-concentration TCA (above 35%) — Less commonly used at deep concentrations

Best For

• Deep wrinkles and severe photoageing
• Significant acne scarring
• Pre-cancerous skin growths (actinic keratoses)
• Severe, treatment-resistant hyperpigmentation

Recovery

• Downtime: 2 to 3 weeks of significant recovery
• Day 1 to 3: Swelling, oozing, and significant discomfort
• Day 3 to 10: Crusting and peeling
• Week 2 to 4: Intense redness that gradually fades
• Month 1 to 3: Residual pinkness resolves
• Return to work: 2 to 3 weeks minimum
• Usually performed once — Results can last years

Benefits of Chemical Peels

Professional chemical peels offer numerous benefits that set them apart from at-home skincare products:

• Clinically proven results — Decades of research support their efficacy
• Customisable — Acid type, concentration, and application technique can be tailored to your specific concerns
• Cost-effective — Compared to many other aesthetic treatments, peels offer excellent value
• Combinable — Can be used alongside other treatments such as injectables, lasers, and topical skincare
• Progressive — A course of peels delivers cumulative improvement
• Versatile — Suitable for most skin types when properly selected
• Stimulate collagen — Medium and deep peels trigger meaningful collagen remodelling

Who Is a Good Candidate?

Chemical peels are suitable for a wide range of patients. Ideal candidates are those who:

• Have realistic expectations about the treatment outcome
• Are in good general health
• Are committed to proper aftercare, especially sun protection
• Do not have active skin infections, open wounds, or severe eczema in the treatment area
• Are not currently pregnant or breastfeeding
• Have not used isotretinoin (Roaccutane) within the past 6 to 12 months

Special Considerations for Darker Skin Tones

Patients with darker skin (Fitzpatrick types IV to VI) can safely benefit from chemical peels, but careful acid selection is essential. Certain acids such as salicylic acid and mandelic acid are better suited to darker skin tones as they carry a lower risk of post-inflammatory hyperpigmentation. A thorough consultation and possible patch test are recommended.

The Treatment Experience

Before Your Peel

• You may be prescribed a pre-peel skincare regimen starting 2 to 4 weeks before treatment to prepare your skin
• Discontinue retinoids and exfoliating acids as directed by your practitioner
• Avoid sun exposure and apply SPF diligently
• Inform your practitioner of any recent facial treatments, medications, or skincare changes

During the Peel

The peel solution is applied evenly across the cleansed skin. You may feel tingling, warmth, or a mild stinging sensation. Superficial peels are generally comfortable, while medium and deep peels may require a topical anaesthetic or cooling. The solution is left on for a specific duration before being neutralised or removed.

After Your Peel

• Your skin will feel tight and may look red or flushed
• A soothing moisturiser and SPF will be applied
• You will receive detailed aftercare instructions specific to the depth of your peel

Aftercare: The Key to Great Results

How you care for your skin after a chemical peel is just as important as the treatment itself:

• Do not pick, pull, or scrub peeling skin — Allow it to shed naturally. Premature removal can cause scarring and pigmentation.
• Moisturise frequently — Keep the skin hydrated with a gentle, non-active moisturiser
• Apply SPF 50 daily — Sun protection is absolutely essential for at least 4 to 6 weeks post-peel. Newly revealed skin is extremely susceptible to UV damage.
• Avoid active skincare — No retinoids, AHAs, BHAs, or vitamin C until your practitioner advises it is safe to resume
• Stay out of direct sunlight — Especially during the peeling phase
• Do not exercise vigorously — For 48 to 72 hours post-treatment (sweating can irritate the skin)
• Avoid saunas, steam rooms, and hot baths — For at least one week

How Many Treatments Will I Need?

• Superficial peels: A course of 4 to 6 treatments, spaced 2 to 4 weeks apart, with maintenance every 4 to 6 weeks
• Medium-depth peels: 1 to 3 treatments, spaced 3 to 6 months apart
• Deep peels: Usually a single treatment, with results lasting several years

Cost of Chemical Peels in London

Chemical peel prices in London vary depending on the type and depth:

• Superficial peels: From 100 to 250 pounds per session
• Medium-depth peels: From 300 to 700 pounds per session
• Deep peels: From 1,000 to 3,000 pounds

At Axiom Aesthetics, we offer package pricing for course-based treatments, which can make superficial peels particularly cost-effective.

Chemical Peels vs Other Skin Treatments

• Peels vs Laser: Both resurface the skin, but peels use chemical exfoliation whilst lasers use light energy. Peels are generally more affordable; lasers offer more precision for certain conditions.
• Peels vs Microneedling: Microneedling creates physical micro-channels; peels dissolve damaged skin layers. They complement each other beautifully in a treatment programme.
• Peels vs Dermabrasion: Dermabrasion is a mechanical resurfacing technique. Chemical peels offer more precise depth control.

Experience Professional Chemical Peels at Axiom Aesthetics

Whether you are looking for a quick skin refresh or a transformative deep peel, our experienced practitioners at Axiom Aesthetics will guide you towards the right treatment for your skin type and concerns.

Book your skin consultation at our Harley Street clinic and discover how chemical peels can transform your complexion.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Chemical peels carry risks including infection, scarring, and pigmentation changes. A thorough consultation with a qualified practitioner is essential before treatment. Results vary between individuals.