Cos De BAHA Salicylic Acid BHA 4% Serum 30ml (S4)

Cos De BAHA Salicylic Acid BHA 4% Serum (S4) is a lightweight, fast-absorbing liquid exfoliant with a professional-strength, alcohol-free formula designed for oily, combination, and blemish-prone skin.

Best used as an PM treatment, applied after cleansing & toning and before moisturizer. Due to increased sun sensitivity from exfoliation, nighttime use is strongly recommended. New users should introduce it 1–2 times weekly before building frequency.

At its core, Salicylic Acid (4%) works as an oil-soluble BHA that penetrates deep into pores to dissolve buildup and control sebum. Niacinamide (Vitamin B3) complements it by visibly evening skin tone and reinforcing the moisture barrier. An Aloe Barbadensis Leaf Extract base provides a soothing, hydrating foundation, while a botanical complex of Rosa Damascena, Lavandula Angustifolia, Camellia Sinensis, and Melissa Officinalis extracts helps calm redness and reduce irritation throughout the exfoliation process.

• Unclogs and visibly minimizes pores by dissolving sebum, dead skin cells, and surface debris from within the pore lining.
• Reduces active breakouts and prevents new ones through both exfoliating and antibacterial action against acne-causing bacteria.
• Evens skin tone and fades post-acne marks over consistent use, supported by Niacinamide’s brightening properties.
• Refines overall skin texture and reduces excess oiliness without stripping moisture, leaving skin clearer and more balanced.

How to Use: After cleansing and toning, apply 1–2 drops to clean, dry skin using a cotton pad, sweeping gently across the face while avoiding the eye area. Do not rinse off. Follow immediately with a moisturizer to lock in hydration. Always patch test under the chin for 24 hours before first use, and wear SPF daily if any daytime exposure is expected.