What should you know about TCA CROSS treatment?

A dermatologist assesses the scar pattern, skin tone, active breakouts, pigment history, and previous procedures before deciding whether TCA CROSS fits. The clinician then applies trichloroacetic acid to carefully chosen depressed scars. Because the solution is placed in the scar rather than brushed over the entire face, the treated points and surrounding skin can look different during recovery. Redness, stinging, crusting, and temporary colour change are possible healing features.

The purpose is to encourage repair within a scar that has lost normal contour. It does not erase every mark or correct all scar types. Broad rolling scars, raised scars, and active inflammation may need a separate treatment strategy. The plan may involve more than one appointment, with healing reviewed before further treatment is considered.

Share all skin products and medicines with the clinician, including retinoids, exfoliating acids, acne treatments, and supplements. Mention recent sun exposure, pregnancy or breastfeeding if relevant, cold sores, eczema, and any tendency to heal with dark or raised marks. After treatment, follow the supplied cleansing and protection instructions, avoid picking, and keep unapproved actives away from the area. Arrange review if the clinic recommends it so the response can be judged after the surface has healed.

Call the treating clinic if discomfort, redness, swelling, or drainage is progressively worsening, or if you develop fever, spreading rash, extensive blistering, or delayed healing. Eye-area swelling, breathing difficulty, or vision change needs urgent medical attention. Persistent pigment alteration or a firm, itchy raised scar also deserves review.

Ask whether your scar shape is suitable, what alternatives exist, how many review visits are expected, which products to stop, and how sun protection will be handled. Ask how a history of pigment change affects the consent discussion.