A TCA peel, or trichloroacetic acid peel, is a type of chemical peel that utilizes trichloroacetic acid (TCA) as the active ingredient to exfoliate and rejuvenate the skin.TCA peels are commonly used to address a range of skin concerns including: fine lines and wrinkles, uneven skin tone,  hyperpigmentation, and skin laxity. Results from TCA peels are typically gradual and cumulative, with noticeable improvements in skin texture, tone, and clarity observed over a series of treatments.