TCA is a non-toxic chemical (trichloracetic acid), which has been used to perform skin peels for over 20 years. It is a relative of vinegar (acetic acid.) When TCA is applied to the skin, it causes the top layers of cells to dry up and peel off over a period of several days to one week. When the old skin is peeled off, it exposes a new layer of undamaged skin, which has a smoother texture and more even color.
Some dermatologists, in fact, still prefer TCA peels for treating sun damage or melasma, usually in combination with prescription creams. TCA peels are safe in the hands of an experienced dermatologist. TCA may be a good option, particularly if you have melasma, because many lasers are difficult to use when treating melasma. Common areas treated include the face, neck, chest, back, arms, and legs.
A TCA peel is most commonly used for:
- to reduce brown spots and age spots
- to improve the texture of leathery, sun damaged skin and impart more glow
- to improve melasma
- to treat some types of acne
- to reduce fine lines
Salicylic peels (a betahydroxy acid) is typically used for acne-prone skin and acne scarring. Betahydroxy acid peels are good for oily skin, acne, uneven skin tone, fine lines and wrinkles. Salicylic acid peels, which are similar to low-strength alphahydroxy acid peels, are best for fighting blackheads, whiteheads, clogged pores, fine lines, wrinkles and uneven skin tone. Although not appropriate for anyone with an active breakout, this type of peel can also provide rejuvenating benefits such as the reduction of fine lines and discoloration, and can stimulate new collagen production (depending on the strength).
