Effaclar Salicylic Acid Acne Treatment Serum 1.5% Salicylic Acid Serum Treatment for Acne Expires 4/2025 This lightweight salicylic acid acne treatment serum clears acne blemishes and helps prevent new breakouts, while also visibly reducing pores, fine lines, and post-acne marks. This serum includes Triple Acid Complex, a blend of 1.5% salicylic acid, glycolic acid, and micro-exfoliating lipo-hydroxy acid for optimal efficacy. This formula also includes Niacinamide and La Roche-Posay Thermal Water to help soothe skin and minimize skin irritation.