Chemical Peels: What to Expect, From Start to Finish

Chemical peels have been used in dermatology for over a century, and for good reason — they work. But the term covers a wide range of treatments, from a gentle lunchtime procedure with no downtime to a deep peel that requires weeks of recovery. Understanding the differences helps you set realistic expectations and choose the right option.

What a Chemical Peel Does

A chemical peel applies an acid solution to the skin, which causes controlled damage to specific layers. As the damaged skin sheds, new skin grows in its place — smoother, more evenly pigmented, and with improved texture.

The depth of the peel determines what it can treat and how much recovery is needed.

Types of Chemical Peels

Superficial (Light) Peels

Acids used: Glycolic acid (20-50%), salicylic acid (20-30%), mandelic acid, lactic acid

What they treat:

• Mild acne and acne scars
• Rough texture
• Dullness
• Fine lines
• Mild hyperpigmentation

What to expect:

• Mild tingling or stinging during application (1-5 minutes)
• Slight redness afterward (like a mild sunburn)
• Light flaking for 2-3 days
• No significant downtime — most people return to normal activities immediately
• Results are cumulative — a series of 4-6 peels, spaced 2-4 weeks apart, gives the best outcome

Who they're good for: Almost everyone. Superficial peels are safe for most skin tones when done correctly. They're a good entry point if you've never had a peel before.

Medium Peels

Acids used: Trichloroacetic acid (TCA) at 25-35%, Jessner's solution, higher-concentration glycolic acid

What they treat:

• Moderate acne scarring
• Sun damage and age spots
• Deeper wrinkles
• Melasma (with caution)
• Precancerous spots (actinic keratoses)

What to expect:

• More intense burning or stinging during application
• Significant redness and swelling for 2-3 days
• Actual peeling (sheets of skin sloughing) for 5-7 days
• Skin may look temporarily worse before it looks better
• Full recovery typically takes 7-10 days
• Results are more dramatic than superficial peels and can last months to years

Important: Medium peels carry more risk for post-inflammatory hyperpigmentation, especially in darker skin tones (Fitzpatrick types IV-VI). Pre-treatment with hydroquinone or tretinoin for 2-4 weeks is often recommended to minimize this risk.

Deep Peels

Acids used: Phenol, high-concentration TCA (50%+)

What they treat:

• Deep wrinkles
• Severe sun damage
• Significant scarring
• Precancerous growths

What to expect:

• Done under sedation or anesthesia
• Significant pain, swelling, and oozing for several days
• Recovery time of 2-4 weeks
• Skin will be red for months and may be permanently lighter
• Results are dramatic and long-lasting (sometimes permanent)
• Not appropriate for darker skin tones due to high risk of permanent pigment changes

Deep peels are rarely performed today — laser resurfacing has largely replaced them for deep work because it offers more precision and control.

Choosing the Right Peel

For Acne

Salicylic acid peels are often the best choice. Salicylic acid is oil-soluble, meaning it penetrates into pores to clear them from the inside. It also has anti-inflammatory properties that help with active breakouts.

For Hyperpigmentation

Glycolic acid or mandelic acid peels work well. Mandelic acid has a larger molecular size, which means it penetrates more slowly and evenly — making it gentler and better suited for darker skin tones with pigmentation concerns.

For Fine Lines and Texture

Glycolic acid or TCA peels. Glycolic acid at superficial depths improves surface texture; TCA at medium depth stimulates more collagen remodeling for deeper improvement.

For Sun Damage

TCA peels at medium depth are the workhorse here. They can significantly reduce sun spots and improve overall skin quality. A series of superficial glycolic peels can also help for mild damage.

Before the Peel: Preparation

Proper prep makes a significant difference in results and reduces complication risk:

• Stop retinoids 3-7 days before (they thin the top skin layer, increasing peel penetration unpredictably)
• Avoid waxing, depilatories, and electrolysis for 1-2 weeks before
• Discontinue exfoliating acids in your home routine for a few days before
• For medium peels: Your provider may prescribe hydroquinone and/or tretinoin for 2-4 weeks before to prepare the skin and reduce pigmentation risk
• Sun avoidance in the weeks before — sunburned or recently tanned skin should not be peeled
• Tell your provider about any history of cold sores (herpes simplex) — a peel can trigger an outbreak, and antiviral medication should be taken prophylactically

During the Peel

The process is simpler than you might expect:

1. Skin is cleansed and degreased
2. The acid solution is applied with a brush, gauze, or cotton applicator
3. You'll feel tingling, stinging, or burning — the intensity depends on the peel strength
4. A neutralizing solution may be applied (for glycolic acid) or the acid is left to self-neutralize (for TCA)
5. A soothing moisturizer and sunscreen are applied
6. Total time: 15-30 minutes for superficial peels, 30-60 minutes for medium peels

After the Peel: Recovery

Superficial Peels

• Mild redness for a few hours to a day
• Skin may feel tight
• Light flaking on days 2-3
• Makeup can usually be worn the next day
• Resume normal skincare in 2-3 days (but hold off on active ingredients like retinoids and acids for about a week)

Medium Peels

• Days 1-2: Redness, swelling, tightness. Skin may look shiny or dark
• Days 3-5: Peeling begins. It can be dramatic — sheets of skin coming off. Do not pull or pick at peeling skin
• Days 5-7: Most peeling complete. New skin is pink and sensitive
• Days 7-14: Redness fading. Skin looks refreshed
• Weeks 2-8: Continue to see improvement as collagen remodeling occurs

Critical Aftercare Rules

• Do not pick, peel, or scrub the shedding skin. Let it come off naturally. Premature removal can cause scarring and pigmentation.
• Moisturize frequently — a plain, gentle moisturizer (Aquaphor, CeraVe Healing Ointment, or similar)
• Sunscreen is mandatory — new skin is extremely photosensitive. SPF 30+ every day, reapplied frequently if outdoors
• Avoid sweating, swimming, and saunas until peeling is complete
• No active skincare (retinoids, acids, vitamin C) until your provider clears you

Risks and Complications

Common

• Redness and peeling (expected and temporary)
• Dryness and tightness
• Temporary sensitivity

Uncommon but Possible

• Post-inflammatory hyperpigmentation: The most common complication, especially in darker skin. Usually temporary but can last months. Risk is reduced with proper preparation and sun protection.
• Infection: Rare with proper aftercare. Signs include increasing pain, pus, and warmth.
• Scarring: Very rare with superficial and medium peels when performed correctly.
• Cold sore reactivation: Can occur if you have a history of herpes simplex and don't take prophylactic antiviral medication.
• Uneven results: Particularly if the acid is applied unevenly or the skin isn't properly prepared.

How Often Can You Get a Peel?

• Superficial peels: Every 2-4 weeks, typically as a series of 4-6
• Medium peels: Every 3-6 months, typically 1-3 treatments
• Deep peels: Usually once — they're not repeated

At-Home vs. Professional Peels

Over-the-counter peels (typically low-concentration glycolic or lactic acid) can provide gentle exfoliation and texture improvement. They're a fine maintenance option between professional treatments.

However, they're significantly less potent than professional peels, which use higher concentrations and lower pH values to achieve deeper penetration. The at-home products are not a substitute for professional treatment when you need meaningful improvement in scarring, pigmentation, or wrinkles.

When to See a Doctor

If you're considering a chemical peel, a professional evaluation ensures you get the right type for your skin concern, your skin tone is appropriate for the peel being considered, and you're properly prepared. This is especially important for medium peels and for anyone with darker skin, a history of keloids, or active skin conditions.

At Coral Health, we can evaluate your skin through telehealth, discuss whether a chemical peel or other treatment is right for your concerns, and prescribe any preparation products you need. The best results come from having a plan — not just walking into a spa and hoping for the best.

Your skin is worth getting this right.