S4 Salicylic Acid BHA 4% Serum

A lightweight exfoliating serum from Cos De BAHA, the S4 delivers 4% salicylic acid to help unclog pores and reduce breakouts. The gel texture absorbs quickly without heaviness, suited for oily and blemish-prone skin. Fragrance-free and formulated for targeted exfoliation, it’s a practical option for anyone building an acne-fighting routine.