MEDICUBE Azelaic Acid Niacinamide Clear Toner 250ml

The Medicube Azelaic Acid Niacinamide Clear Toner is a clarifying treatment designed for daily use. While the 16% Serum we discussed is a high-intensity "punch" for stubborn spots, this 4% Toner acts as a consistent, gentle regulator to prevent congestion and redness from returning. 

Sebum Control: It helps lower surface oil levels (clinically tested to show roughly an 11.8% improvement in excess sebum after 2 weeks). 

Pore Refining: By preventing oil from oxidizing in the pores, it keeps them looking smaller and prevents blackheads. 

Temperature Drop: It provides an instant cooling sensation (measured at -37.4°F upon application), which is excellent for calming active "hot" acne or rosacea flushing. 

Barrier Strengthening: Despite being a clarifying toner, it is proven to improve the skin's natural barrier by 48% after just one use, thanks to Ceramides and Centella Asiatica.