What is trichloroacetic acid used for?

Trichloroacetic acid causes a controlled chemical injury to the outer skin layers. In a chemical peel, the clinician selects a formulation and contact time for the concern and body area. The treated skin then heals and may look smoother or more even as the surface renews.

A targeted technique such as TCA CROSS places acid inside selected acne-scar depressions rather than broadly across the face. The procedure requires careful assessment because skin tone, scar type, active acne and healing history affect the plan.

Tell the clinician about recent sun exposure, cold sores, active dermatitis, wound healing problems, pregnancy, medicines and previous pigment changes. Follow the preparation and aftercare plan, avoid picking or peeling treated skin, and protect it from sunlight while it heals.

Do not apply concentrated trichloroacetic acid at home or substitute a household chemical. Professional depth control is part of keeping the treatment within its intended purpose.

Contact the treating clinic promptly for severe or escalating pain, extensive blistering, increasing swelling, pus, fever, spreading redness or darkening that is progressing rather than settling. Urgent care is needed for eye exposure, vision changes or breathing difficulty. New or changing lesions should be examined before any peel is planned.

Ask which technique is proposed, what depth is intended, how your skin tone and scar type affect risk, what recovery signs are expected, and which products must be paused.