Trichloroacetic acid has been used in dermatological peels for over 50 years. It works by absorbing skin proteins. The use of TCA causes cell necrosis by denaturing proteins, followed by their coagulation and death. The depth of necrosis is closely related to the concentration of TCA. The TCA Kit has a concentration of less than 20%, which is considered the chemical effect of superficial peeling - the average value. Its application can eliminate nascent, medium and deep wrinkles, improve skin texture, remove acne scars, soften the appearance of the skin, achieving greater brightness and brighten hyperpigmented lesions.