TCA peels confer several advantages for both the patient and physician. TCA is an inexpensive solution that can be easily prepared, is stable, and has a long shelf life. TCA, as opposed to peels such as Baker's phenol, does not have any systemic toxicity. In addition, as noted previously, it is a versatile agent that can be used for superficial, medium and deep chemical peeling. The frosting reaction can be a utilized as a reliable indicator for the depth of the chemical peel, making this a safe agent in the hands of the experienced dermatologist. However, TCA in concentrations >40% has an unreliable penetration depth and can result in scarring.
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