Why is trichloroacetic acid used in chemical peel?

When applied by a trained clinician, trichloroacetic acid reacts with proteins in the treated skin. The depth of the reaction depends on the formulation, application technique, skin condition, and treatment area. As the treated surface sheds and heals, roughness and uneven colour may look less noticeable, and collagen remodeling may support texture changes over time. The same chemical can be inappropriate when used at the wrong strength or on unsuitable skin, so a professional assessment matters.

Tell the clinician about recent sun exposure, active acne or cold sores, eczema, medicines, previous pigment changes, and a history of raised scars. Follow instructions about pausing irritating products before treatment. Afterward, cleanse gently, moisturize as directed, protect the area from sunlight, and allow peeling skin to detach on its own. Do not apply household acids or pick at crusts while the skin heals.

Contact the treating clinic if burning or pain becomes severe, redness spreads, swelling increases, or the area develops blisters, pus, fever, or extensive crusting. Seek urgent help for facial swelling affecting breathing or vision. Persistent darkening, lightening, or scarring should be assessed rather than treated with additional products at home.

Ask what depth is planned, which concern the peel is intended to address, and how your skin tone and history affect the plan. Clarify preparation, expected peeling, sun protection, products to avoid, signs of infection, and when the result should be reviewed.