Salicylic acid is a topical acid that can be applied to the skin as a spot treatment or in higher concentrations as a chemical peel. Salicylic acid is a form of beta hydroxy acid, that, when applied to the face, can reduce the amount of dead skin cells, dirt and oils that can clog the pores and cause acne to occur, according to Medline Plus. While salicylic acid has many beneficial effects, such as reduced acne occurrence and smoother skin, its application as a chemical peel also carries with it some risks.
Skin Irritation
According to MedlinePlus, skin irritation is a side effect that can occur following a salicylic acid peel application. Because a salicylic acid peel involves essentially peeling away a top layer of skin, redness and irritation can occur as the skin repairs itself. The old layer of skin will exfoliate away, making way for skin that is newer and fresher in appearance. This can make the skin slightly reddened or sensitive to the touch, but this should subside quickly, according to DocShop.com. However, if irritation continues several days after your chemical peel, seek the attention of a medical professional.
Pigmentation Irregularities
Following the application of a salicylic acid peel, hypo- or hyperpigmentation can occur. Because salicylic acid peels encourage skin exfoliation and act as a keratolytic agent, pulling dead skin cells and oils out of the pores, it is possible for areas of dry, scaly skin to fall off when the acid solution is applied, according to MedlinePlus. When this occurs, skin may appear irregular in color or patchy. Some areas may be darker than the skin surrounding them while others are lighter. This occurrence should regulate itself when the skin heals following the peel. However, if it continues after several weeks, you should seek a physician's advice in order to ensure the discoloration does not become permanent.
Swelling
Edema, or swelling, can be the body's natural reaction to injury. While salicylic acid peels do have a therapeutic effect, swelling can occur immediately after application, according to the "Indian Journal of Dermatology, Venereology and Leprology." This may give your face a slightly puffy appearance, but should not be cause for concern. Drinking plenty of water can help the water that your skin is retaining to flush away. If swelling seems to worsen over time instead of improve, seek medical attention.
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