Who can perform a chemical peel depends on how deep the peel goes. Licensed estheticians and cosmetologists can perform light, superficial peels. Medium and deep peels are medical procedures that require a physician, typically a dermatologist or plastic surgeon, or a trained medical professional working under physician supervision.
How Peel Depth Determines Who Can Treat You
Chemical peels fall into three categories based on how far the solution penetrates your skin, and that depth is what draws the legal line between a cosmetic service and a medical procedure.
Light (superficial) peels affect only the outermost layer of skin. They improve mild acne, uneven tone, and texture. These are the peels you’ll find at day spas, salons, and skincare clinics performed by licensed estheticians or cosmetologists.
Medium peels penetrate through the outer layer into the upper portion of the deeper skin layer. They treat sun damage, shallow acne scars, and fine wrinkles. Because they cause a controlled injury below the surface, these are considered medical procedures.
Deep peels reach into the middle of the deeper skin layer and address severe scarring and deep wrinkles. They carry risks of cardiac, kidney, and lung toxicity when phenol-based solutions are used, and may require cardiac monitoring and even general anesthesia. Only experienced physicians should perform these.
What Estheticians and Cosmetologists Can Do
Licensed estheticians and cosmetologists are trained in skincare and authorized to perform superficial chemical exfoliation. They cannot legally perform medium or deep peels. State boards set specific limits on the acid concentrations they’re allowed to use. In Arkansas, for example, estheticians can use glycolic acid up to 50% (with a pH no lower than 2), salicylic acid up to 20%, and TCA below 20%. Other states set their own thresholds, but the principle is consistent: estheticians stay at the surface level.
California’s Board of Barbering and Cosmetology puts it plainly: cosmetologists and estheticians are limited to light or superficial chemical exfoliation. For anything deeper, you need to see a dermatologist. The Medical Board of California goes further, stating that cosmetologists “may never perform medical-level skin peels,” even in a medical spa setting.
Physicians Who Perform Medium and Deep Peels
Dermatologists and plastic surgeons are the specialists most commonly trained to perform the full range of chemical peels. At major medical centers like UT Southwestern, chemical peels are performed by board-certified dermatologists and plastic surgeons who completed residencies in their respective fields and hold certifications from the American Board of Dermatology or the American Board of Plastic Surgery.
Deep phenol peels in particular call for this level of expertise. Phenol is absorbed through the skin and can cause heart arrhythmias, so the procedure sometimes requires an anesthesiologist and a team prepared for cardiac monitoring and fluid management. These peels are also not recommended for people with darker skin tones because of a high risk of permanent pigment changes, a judgment call that requires clinical training to make safely.
Nurses and Other Medical Professionals
Registered nurses working in aesthetic settings regularly perform chemical peels, including some medium-depth peels, as part of their scope of practice. The key distinction is supervision. RNs can administer treatments but generally work under the direction of a physician. Nurse practitioners have greater autonomy, with prescriptive authority in all 50 states (though some states require physician oversight), and can often perform in-office treatments independently.
To work in aesthetics, nurses typically need an active RN or LPN license plus specialized training in aesthetic procedures, including chemical peels, laser therapies, and other skin rejuvenation techniques. There’s no single national certification, so training standards vary by state and employer. In Florida, for instance, aesthetic nurses must hold an active nursing license and complete dedicated aesthetics training.
Medical Spas and Supervision Rules
Medical spas occupy a gray area that trips up a lot of consumers. They look and feel like day spas, but if they’re offering medical-grade peels, they’re legally functioning as medical practices. In California, medical spas offering medical procedures must be owned by physicians. The FDA has reinforced this boundary, warning consumers to use chemical peel products only under the supervision of a dermatologist or licensed, trained practitioner.
What “supervision” means varies by state. In some states, a physician must be physically present when medical-grade peels are applied. In others, a medical director can oversee operations remotely while nurses or physician assistants perform procedures on-site. Before booking a medium-depth peel at a med spa, it’s worth asking who the supervising physician is and what training the person actually applying the peel has completed.
Why the Provider Matters for Complications
Superficial peels are very safe when performed correctly, but they can still cause itching, redness, increased sensitivity, and post-inflammatory darkening of the skin, particularly in deeper skin tones. The stakes rise with depth. Medium and deep peels can trigger herpes virus reactivation, bacterial or fungal infections, delayed healing, and scarring.
Deep phenol peels carry systemic risks that go well beyond the skin. Cardiac arrhythmias can occur during the procedure itself, requiring it to be stopped immediately. In rare cases, toxic shock syndrome can develop two to three days after a peel, with symptoms including fever, dangerously low blood pressure, vomiting, and rash. Accidental contact with the eyes during a phenol peel requires flushing with mineral oil (not saline) and an immediate ophthalmology referral.
These complications explain why regulation exists in the first place. A salon esthetician isn’t equipped to manage a cardiac event or diagnose an emerging infection. The deeper the peel, the more things can go wrong, and the more training your provider needs to recognize and handle problems quickly.