What is trichloroacetic acid (TCA) primarily used for?

Trichloroacetic acid (TCA) is primarily utilized for deep chemical peels, specifically targeting conditions such as sun damage and wrinkles. This is because TCA penetrates the skin more deeply than many other chemical peels, allowing for significant exfoliation of the upper layers of skin. This deep penetration helps to stimulate collagen production and improve skin texture and tone, making it particularly effective for addressing issues associated with aging and sun exposure. By removing damaged skin cells and promoting new skin growth, TCA is effective in reducing the appearance of fine lines, chronic sun damage, and other textural irregularities.

While TCA may also have some benefits related to lightening acne scars and facilitating chemical exfoliation, its primary clinical application remains in offering deep exfoliation to enhance skin rejuvenation. The versatility of TCA as a medium-depth peel allows estheticians and dermatologists to achieve desired results in more severe cases of skin damage compared to lighter agents.