Product Overview

COS DE BAHA Salicylic Acid (S4) 4% Serum 30ml is a powerful exfoliating Korean skincare serum formulated with 4% Salicylic Acid (BHA) and Niacinamide to help improve acne-prone skin, clogged pores, blackheads and excess oil.

Its oil-soluble BHA formula helps exfoliate dead skin cells and clear pore buildup, promoting smoother skin texture and a clearer-looking complexion.

Enriched with Aloe Vera and botanical extracts, this serum also helps soothe and condition the skin while supporting oil balance.

An excellent targeted skincare option for those struggling with persistent clogged pores, oily skin and frequent breakouts.

2. Key Benefits

• Acne & Blemish Care: Helps improve the appearance of acne-prone skin.

• Deep Pore Cleansing: Helps clear clogged pores and excess oil.

• Blackhead Care: Helps remove dead skin cell buildup and reduce visible blackheads.

• Oil Control: Helps manage excess sebum production.

• Skin Exfoliation: Removes dead skin cells for smoother-looking skin.

• Skin Texture: Helps refine rough and uneven skin texture.

• Brightening Support: Niacinamide helps improve uneven-looking skin tone.

• Soothing Care: Aloe Vera and botanical extracts help condition the skin.

   

  How to Use

  1. Cleanse your face with a gentle facial cleanser.

  2. Apply toner if needed.

  3. Take 2–3 drops of serum.

  4. Gently apply to acne-prone or congested areas.

  5. Allow the serum to absorb.

  6. Follow with a suitable moisturizer.

  Recommended Usage:

  • Start with 2 times per week at night.

  • Increase frequency only if your skin tolerates it.

  • Avoid using it in the same routine with other strong exfoliating acids or retinoids unless advised by a skincare professional.

  • Apply SPF 30 or higher sunscreen during daytime.

  • Perform a patch test before first use.