Chemical peels for the face: effects, depth and recovery

Dermatologists use chemical peels for some forms of acne, uneven skin tone, sun damage and fine lines. The expected benefit depends on what lies at the depth being treated: working on the surface does not automatically correct a deeper concern. A pronounced wrinkle, loose skin or a scar is therefore not enough, on appearance alone, to establish that a peel is appropriate.

Skin continues to age and experience the effects of sun exposure after treatment. An improvement does not permanently protect against new spots or wrinkles. Results are assessed after healing, without mistaking temporarily tight or red skin for the intended outcome.

The approach to dark spots on the face or melasma, and the choice of treatment for acne scars, depend on identifying the origin and type of concern. The fact that peels can be used in some of these situations does not mean that one procedure addresses them all.

A superficial peel works in the outer layers of skin. Redness and flaking can follow, sometimes with only subtle peeling. Recovery is generally shorter than after a medium-depth peel, but “superficial” does not mean free of irritation or suitable for every skin type.

A medium-depth peel reaches further into the skin. More noticeable inflammation, swelling and crusting may require recovery time at home and follow-up. A deep peel causes a more extensive injury and needs a higher level of medical supervision. It is not simply a stronger version of a complexion-refreshing facial.

The name of the acid does not establish the depth. The formulation, applications and contact time can change how far a product penetrates. A percentage on a product label is therefore not enough to compare two peels or choose a preparation for self-use.

Glycolic and lactic acids are AHAs. They loosen the substances holding surface skin cells together, allowing them to shed. The formulation, concentration and application conditions determine intensity; the term “fruit acid” does not establish better tolerance.

Salicylic acid, a BHA, can penetrate fatty material in the follicle and help exfoliate pores. This difference from AHAs explains why a product for congested skin may have a different composition from one aimed mainly at the surface. It does not establish an acne treatment choice from this page.

Jessner-type formulations combine several substances. An acid’s name does not always describe the whole formula. Combining acids does not, by itself, establish depth or promise fewer risks on darker skin.

Enzyme exfoliation targets keratin build-up at the skin’s surface. Enzymes such as papain and bromelain, from papaya and pineapple, contribute to this exfoliation. The procedure differs from scrubbing by friction; fruit enzymes are also different from fruit acids.

Labels may nevertheless describe a mixed formulation: some exfoliants labelled enzymatic combine fruit enzymes with lactic acid. They should therefore neither be treated as enzyme-only facials nor have their cosmetic instructions transferred to a professional peel. The product and steps depend on the chosen facial and your skin.

Darker or more pigmented skin can develop dark spots after inflammation, known as post-inflammatory hyperpigmentation. A peel intended to even out skin tone can therefore create new colour differences. Loss of pigment and scarring are other risks to consider.

Skin colour is not the only factor. Marks after previous irritation, a tendency to form raised scars, tanning and reactions to earlier treatments change the assessment. The method and depth should account for this history; using another person’s protocol does not guarantee the same tolerance.

A routine skin care product being suitable does not establish that a concentrated peel is suitable. During pregnancy or when planning a pregnancy, the substances applied and any preparation products need to be reviewed. Retinoids and hydroquinone are among the ingredients the American Academy of Dermatology recommends avoiding during pregnancy.

Medicines, prescription skin care, allergies and a history of cold sores should be reported before a peel. Depending on the procedure, specific preparation or measures to prevent herpes may be needed. Changes to prescribed treatment are decided with the prescriber; this general information does not provide a stopping schedule or a protocol to reproduce.