Cos De BAHA

Cos De BAHA (코스데바하) is a clinical-grade Korean derma-cosmetic brand focused on high-concentration, single-active treatment serums. Known for minimalist formulas and transparent active percentages, the brand delivers targeted, medical-grade solutions for hyperpigmentation, active acne, rosacea, and skin barrier repair at accessible price points.

Top Bestsellers:

  • AZ Azelaic Acid 10% Serum: A viral treatment formulated with 10% Azelaic Acid and Niacinamide to calm rosacea, dissolve pore congestion, and fade stubborn post-inflammatory hyperpigmentation.

  • TN Tranexamic Acid 5% + Niacinamide 5% Serum: A powerful targeted serum designed to block melanin synthesis, lighten deep dark spots, and even out patchy skin tone.