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Histologic Changes After Chemical Peeling: A Clinical Review.

Kanthi Bommareddy¹, Harold Brody², Suzanne Cheng³

¹Department of Dermatology, Larkin Health System, South Miami, Florida.

Dermatologic Surgery : Official Publication for American Society for Dermatologic Surgery [Et Al.]

|October 28, 2025

Summary

Chemical peels, a method for controlled skin damage, induce varying epidermal and dermal architectural changes. Understanding these histologic alterations helps clinicians select the best peel for specific skin conditions.

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Area of Science:

Dermatology
Histopathology

Background:

Chemical peeling involves controlled wounding of the epidermis and dermis.
Peels are classified as superficial, medium, or deep based on wound depth.

Purpose of the Study:

To review the architectural changes in the epidermis and dermis following chemical peeling.
To correlate peel depth with histologic outcomes.

Main Methods:

A literature search of PubMed was conducted for studies on epidermal and dermal changes after chemexfoliation.
A narrative synthesis approach was used to summarize the findings.

Main Results:

Superficial peels cause epidermal regeneration with minimal dermal changes.
Medium-depth peels increase dermal thickness and collagen, with variable elastin improvement.
Deep peels lead to significant epidermal and dermal thickening, increased collagen, and improved elastin quality.

Conclusions:

Chemical peels induce distinct histologic changes dependent on peel depth and type.
Knowledge of these histologic effects aids in selecting appropriate peels for specific dermatologic conditions.