Product Overview

COS DE BAHA Azelaic Acid Hinokitiol Clear Skin Serum 30ml (AC Serum) is a multifunctional Korean skincare serum specially formulated for acne-prone, oily and blemish-prone skin.

Powered by Azelaic Acid, Niacinamide, Salicylic Acid, Hinokitiol and Tea Tree Oil, this lightweight serum helps improve the appearance of acne, redness, clogged pores and post-acne marks.

Its multi-action formula helps control excess oil, refine uneven skin texture and promote a clearer, smoother and more balanced-looking complexion.

If you are looking for a targeted skincare solution for breakouts, blackheads, blemishes and uneven skin tone, COS DE BAHA AC Serum can be a valuable addition to your skincare routine.

2. Key Benefits

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

• Redness Care: Azelaic Acid and Hinokitiol help soothe the appearance of redness.

• Dark Spot Care: Helps reduce the appearance of post-acne marks and discoloration.

• Pore Care: Salicylic Acid helps exfoliate dead skin cells and unclog pores.

• Oil Control: Niacinamide helps maintain balanced sebum production.

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

• Antioxidant Support: Botanical ingredients help support healthy-looking skin.

• Hydration: Hyaluronic Acid helps maintain skin moisture.

  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 the face, avoiding the eye area.

  5. Allow the serum to absorb.

  6. Follow with a suitable moisturizer.

  7. Apply SPF 30 or higher sunscreen during daytime.

  Recommended Usage:

  • Beginners: Start 2 times per week at night.

  • Gradually increase frequency according to skin tolerance.

  • Avoid combining in the same routine with other strong exfoliating acids or retinoids.

  • Do not apply to broken or irritated skin.

  • Perform a 48-hour patch test before first use.

  Important: This formula contains Retinol and Salicylic Acid. Pregnant or breastfeeding users should consult a healthcare professional before use.