http://www.chemicalpeelall.com/types-of-chemical-peels/tca-peels-preparation-for-medium-chemical-peel-/ Medium chemical peels are highly effective in reaching skin smoothness and verve. They as well improve frivolous discolouration and eliminate all right wrinkles. They do nothing as acne scarring or active wrinkles. Medium depth peels can be reached with a change of chemicals. TCA (trichloroacetic acid) is the almost common. glycolic acid, 2-hydroxybenzoic acid, and some other agents are also used.... Thu, 30 Jul 2009 23:09:26 MDT en