Chemical peels are among the oldest and most well-researched procedures in dermatology. While the concept, applying a solution to the skin that causes controlled exfoliation and regeneration, has been practised in various forms for centuries, modern chemical peels are precise, customisable treatments that address a remarkably wide range of skin concerns. From acne and pigmentation to fine lines and dullness, a properly selected peel can deliver visible improvement that topical products alone often cannot achieve.
Yet chemical peels are also one of the most misunderstood treatments. Patients often associate them with dramatic peeling, redness, and weeks of hiding from the world. In reality, the majority of peels performed in clinical practice are superficial treatments with minimal downtime that can be done during a lunch break. In this guide, I will explain the science behind chemical peels, the different types we use, how we customise them for Indian skin, and what you can realistically expect from treatment.
What Are Chemical Peels?
A chemical peel involves the application of a controlled acidic solution to the skin surface. This solution dissolves the intercellular bonds between keratinocytes (skin cells), causing the outermost damaged layers to separate and shed. As the skin heals, it regenerates with improved texture, more even pigmentation, and increased collagen in the underlying layers.
The depth of the peel, and therefore the intensity of results and recovery, depends on three factors:
- Type of acid used
- Concentration of the acid
- Duration of application
Chemical peels are classified by the depth of skin they affect:
Superficial peels penetrate the epidermis only. They use mild acids at low concentrations and have minimal to no downtime. These are the most commonly performed peels and are suitable for routine skin maintenance.
Medium-depth peels penetrate through the epidermis into the upper dermis (papillary dermis). They produce more significant results but require 5 to 7 days of recovery.
Deep peels reach the mid-reticular dermis and produce dramatic resurfacing but are rarely performed today due to the availability of fractional lasers that achieve similar results with better safety profiles.
How Do Chemical Peels Work? The Science
Mechanism of Action
All chemical peels work through a common mechanism: acid-induced keratolysis (dissolution of the protein bonds holding dead skin cells together) followed by an inflammatory wound-healing response that triggers regeneration.
Superficial peels primarily work by accelerating the natural desquamation process. They remove the stratum corneum and upper epidermis, allowing newer cells with more uniform melanin distribution to surface. This produces the immediate brightening effect.
Medium-depth peels extend into the dermis, where they cause controlled damage to collagen fibres. The wound-healing response that follows stimulates fibroblasts to produce new collagen (neocollagenesis) and elastin, resulting in firmer, smoother skin with reduced fine lines.
Specific Acid Mechanisms
Different acids have distinct properties that make them suited for different indications:
Glycolic acid (an alpha-hydroxy acid/AHA from sugarcane) has the smallest molecular size among AHAs, allowing it to penetrate effectively. It works by disrupting ionic bonds between corneocytes and also stimulates glycosaminoglycan production in the dermis, improving hydration.
Salicylic acid (a beta-hydroxy acid/BHA) is lipophilic, meaning it dissolves in oil. This unique property allows it to penetrate into sebum-filled pores, making it particularly effective for oily, acne-prone skin. It also has inherent anti-inflammatory and antimicrobial properties.
Lactic acid (an AHA from milk) is larger than glycolic acid, making it a gentler exfoliant with humectant properties. It attracts water to the skin surface, making it suitable for dry or sensitive skin that needs exfoliation without dehydration.
Trichloroacetic acid (TCA) causes protein coagulation in the epidermis and upper dermis. TCA peels at concentrations of 15 to 35 percent produce medium-depth exfoliation and are effective for pigmentation, acne scars, and fine lines. They require more recovery time than superficial peels.
Mandelic acid (an AHA from almonds) has a large molecular size that results in slow, even penetration. It is well-tolerated by darker skin types and is effective for pigmentation and mild acne.
Jessner’s solution is a combination of salicylic acid, lactic acid, and resorcinol. It can be used as a standalone superficial peel or as a primer for TCA to achieve even medium-depth penetration.
Types of Skin Peels at DermaVue
Glycolic Peel
- Concentration: 20 to 70 percent (titrated to your skin’s tolerance)
- Indication: Dull skin, uneven texture, fine lines, mild pigmentation
- Downtime: Minimal; slight redness for a few hours
- Frequency: Every 2 to 4 weeks for a course of 4 to 6 sessions
Salicylic Peel
- Concentration: 20 to 30 percent
- Indication: Acne, oily skin, comedones (blackheads and whiteheads), seborrhoea
- Downtime: Minimal; mild flaking for 1 to 2 days
- Frequency: Every 2 to 3 weeks for a course of 4 to 6 sessions
Lactic Acid Peel
- Concentration: 30 to 90 percent
- Indication: Dry or sensitive skin needing gentle exfoliation, mild pigmentation, dehydration
- Downtime: Minimal
- Frequency: Every 2 to 4 weeks for 4 to 6 sessions
TCA Peel
- Concentration: 15 to 35 percent
- Indication: Moderate pigmentation (melasma, post-inflammatory hyperpigmentation), acne scarring, fine lines, sun damage
- Downtime: 5 to 7 days of peeling and redness
- Frequency: Every 4 to 6 weeks for 2 to 4 sessions
Combination Peels
- Example: Yellow peel (retinol-based), modified Jessner’s
- Indication: Multi-factorial skin concerns requiring targeted action
- Customised based on individual skin assessment
Chemical Peels and Indian Skin: Important Considerations
Indian skin (Fitzpatrick types III to V) presents specific considerations for chemical peels:
Post-inflammatory hyperpigmentation (PIH) risk. Darker skin types have more active melanocytes that can respond to the inflammation caused by a peel by producing excess melanin. This paradoxical darkening is temporary but can take weeks to resolve.
How we mitigate this at DermaVue:
- We start with lower concentrations and shorter application times, gradually increasing over subsequent sessions
- Pre-treatment with topical depigmenting agents (vitamin C, niacinamide, arbutin) for 2 to 4 weeks primes the melanocytes to be less reactive
- Strict post-peel sun protection is mandatory
- We favour acids with documented safety in darker skin types: salicylic acid, mandelic acid, and lactic acid have lower PIH risk than glycolic acid at equivalent depth
The advantage of Indian skin: Darker skin types tend to heal with excellent cosmetic outcomes once the peel has resolved, and the risk of permanent scarring from superficial peels is very low.
The Treatment Process at DermaVue
Consultation
We assess your skin type, concerns, previous treatments, current skincare routine, and any allergies. A customised peel type and concentration are selected based on this evaluation.
Pre-Treatment (2 to 4 Weeks Before)
- Begin a prescribed topical preparation regimen (vitamin C serum, niacinamide, or arbutin)
- Discontinue retinoids 5 to 7 days before
- Avoid waxing, threading, or other facial treatments for 1 week before
- Inform us of any medications, particularly isotretinoin
During the Procedure
- The face is cleansed and degreased
- The peel solution is applied in layers, monitored carefully for the desired clinical endpoint (mild frosting, erythema, or patient sensation)
- For superficial peels, the solution is neutralised or rinsed after the appropriate duration (2 to 5 minutes typically)
- A soothing post-peel mask or cream is applied
- The entire process takes 20 to 30 minutes
Post-Treatment Care
- Apply prescribed post-peel cream (a bland, barrier-repair moisturiser)
- Avoid active skincare products (retinoids, vitamin C, AHAs/BHAs) for 5 to 7 days
- Apply SPF 50+ broad-spectrum sunscreen religiously
- Do not pick, scratch, or peel flaking skin
- Avoid steam, sauna, intense exercise for 48 hours
Results and Expectations
After a single superficial peel: Immediate brightening and smoother texture. The skin appears fresher and more luminous within 2 to 3 days.
After a course of 4 to 6 peels: Cumulative improvement in pigmentation evenness, acne reduction, pore refinement, and overall skin quality. Fine lines appear softened. Skin tone is more uniform.
After medium-depth peels: More significant improvement in pigmentation, scarring, and fine lines, visible once healing is complete (7 to 10 days). Results continue to improve over 1 to 3 months as collagen remodelling occurs.
Chemical peels are not a one-time solution. Like dental cleaning, they work best as part of a regular maintenance programme, with superficial peels performed periodically to maintain skin health.
Safety Profile
When performed by a trained dermatologist with appropriate acid selection and concentration:
- Very common: Mild stinging during application, transient redness, slight peeling
- Common: Dryness and tightness for 2 to 3 days
- Uncommon: PIH (managed with topical agents), contact dermatitis
- Rare: Infection, scarring, persistent pigmentation changes (essentially absent with superficial peels)
Related DermaVue Services
Frequently Asked Questions
Will a chemical peel make my skin peel dramatically? Superficial peels cause minimal visible peeling; you may notice slight flaking for 1 to 2 days. Medium-depth peels (TCA) cause more noticeable peeling over 5 to 7 days. The degree of visible peeling does not correlate directly with the quality of results.
How many sessions do I need? Superficial peels are typically done in courses of 4 to 6 sessions spaced 2 to 4 weeks apart. Medium-depth peels require fewer sessions (2 to 4) with longer intervals. Your dermatologist will recommend a plan based on your specific concerns.
Can I get a chemical peel if I have active acne? Yes. Salicylic acid peels are specifically indicated for active acne. They help unclog pores, reduce bacterial load, and decrease inflammation. However, peels should not be applied over open, actively infected pustules or cysts.
Are chemical peels safe for dark Indian skin? Yes, with appropriate acid selection and technique. At DermaVue, we select acids and concentrations that are well-documented for safety in Fitzpatrick III-V skin types and use pre-treatment protocols to minimise pigmentation risk.
Can I do peels at home instead? Over-the-counter AHA and BHA products (typically at lower concentrations) provide mild exfoliation and can supplement professional peels. However, clinical-strength peels deliver controlled, deeper exfoliation under supervision, producing results that home products cannot replicate. Using high-concentration acids at home without training risks burns and pigmentation.
Integrating Peels into Your Skincare Plan
Chemical peels are most effective when they are part of a comprehensive skincare strategy that includes daily sunscreen, appropriate topical actives, and healthy lifestyle habits. At DermaVue, we often combine peels with other treatments, such as skin boosters for hydration, laser treatments for deeper concerns, or topical prescription regimens for ongoing maintenance.
Book a consultation to determine which type of peel is right for your skin, and start a customised treatment plan that delivers measurable, sustained improvement.