Smart TCA Peel significantly improves the appearance of fine lines, wrinkles, pore size, laxity, and stubborn discoloration. Trichloroacetic Acid (TCA) is known as the gold-standard ingredient in chemical peeling – as it’s a tried-and-tested acid used for decades by doctors. Ideal for all skin types and most skin tones, the Smart TCA Peel features a blend of 15% Trichloroacetic Acid with 3% Glycolic Acid.