Hi,
Generally, all post-inflammatory erythema will take several weeks to months to gradually clear on its own. The more intense the preceding inflammation, the longer it will usually take to clear.
As TCA CROSS induces significant injury to the skin (up to the dermal layer) that it is applied to, it will definitely take a minimum of several weeks to fade.
The use of a concealer to conceal the redness will be useful while waiting for the redness to fade.
Hope this helps!
