Trichloroacetic (TCA) peel is a light chemical peel. Many people don't relish the idea of two weeks in hiding while waiting for their new skin. Less drastic types of peels were introduced in the 1980s, using trichloroacetic acid (TCA). This procedure hurts when performed, but peels more superficially than when phenol is used. The epidermis and superficial dermis peel, healing in five to eight days. The more superficial the peel, the fewer wrinkles are removed.
TCA concentrations range from 15% to 50%, alone or in combination with other chemicals. Higher concentrations result in deeper peels. The TCA peel is useful for pigmentation irregularities, such as sun damaged skin and discoloration from pregnancy. It helps wrinkles and other sun damage. Acne and large pores are improved. Even some premalignant conditions can be corrected.
Literally dozens of factors can be altered in the TCA procedure, resulting in different levels of peeling. The thickness of the skin, the pre-peel use of creams, the type of cleansing the day of the peel, the TCA concentration, how hard the chemical is rubbed in, how many strokes the surgeon uses to apply the peel, and how the peel is cared for afterward all affect the result. The TCA peel is part art and part science.