TCA CROSS works by precisely placing small amounts of trichloroacetic acid into each scar using a fine applicator. The acid causes a localised injury that stimulates healing and collagen remodelling in the treated area. Over a series of sessions, scars appear shallower and less visible as new tissue replaces damaged skin.
It is often used alongside other scar treatments such as subcision or fractional laser for comprehensive scar revision.
It is most effective for deep atrophic scars like ice pick or small boxcar scars. It is not suitable for raised scars.
Temporary darkening (post-inflammatory hyperpigmentation) may occur, especially in medium to deep skin tones. This typically resolves with time or can be managed with topical care.
Yes. TCA CROSS is often part of a combination approach with subcision, microneedling, or laser treatments to improve overall texture and scar depth.
A short stinging sensation is normal. The procedure is quick and well-tolerated without the need for numbing in most cases.
Some pinpoint scabbing or frosting may be seen in treated areas for a few days. Most patients resume normal activities shortly after.
