Trichloroacetic acid is considered to be a confirmed carcinogen in experimental animals, with unknown relevance to humans by the American Conference of Industrial Hygienists (HSDB, 2012).
Does trichloroacetic acid have side effects?
Side effects:
Mild to moderate skin irritation. Burning. Pain. Swelling and tenderness.
Can acid cause skin cancer?
But these acids also can make the skin more sensitive to the ravages of the sun. It becomes more apt to burn, which not only contributes to aging but also can lead to skin cancer.