What type of chemical peel should be avoided if allergic to aspirin?

Salicylic acid is a beta hydroxy acid (BHA) that is commonly used in chemical peels, particularly for its ability to penetrate oil and exfoliate the skin. Individuals who are allergic to aspirin should avoid salicylic acid because it is chemically similar to aspirin (acetylsalicylic acid) and can trigger an allergic reaction in those who have a sensitivity to aspirin. This connection is particularly relevant because salicylic acid is often utilized in acne treatments and skin exfoliation, meaning that patients with aspirin allergies should seek alternatives to prevent any adverse effects.

The other peels mentioned, like glycolic, Jessner's, and TCA, do not share this chemical structure and thus do not pose the same risk for individuals with an aspirin allergy. Therefore, salicylic acid is the type of chemical peel that should be consciously avoided in this situation.