Hi there- Chemical peels vary in their levels of discomfort depending on the type of peel. Solutions such as glycolic or lactic acid usually feel itchy and stingy when applied to the skin. Most patients find this sensation to be tolerable, with only mild discomfort. Stronger solutions like TCA , Phenol and Jessner peels can be very uncomfortable as they cause the skin to feel increasingly hot as layers of the acid are applied. The VI peel is a blend of TCA, Phenol, Salicylic acid, Retin-a and Vitamin C that also contains a numbing agent. Despite the intense strength and effectiveness of this peel, once the first layer is applied to the skin the numbing agent takes effect and the skin feels cool and tingly as though peppermint oil has been applied. Even though the first layer feels hot and stingy, most patients feel that the numbing takes effect so quickly they find the VI peel to be only minimally uncomfortable.