Medicube Azelaic Acid Niacinamide Clarifying Toner is designed as a daily soothing and clarifying toner, particularly for skin affected by excess oil, visible redness, uneven texture and troubled-looking skin. Its lightweight watery consistency makes it easy to incorporate after cleansing without leaving a heavy or greasy feel.

At the heart of the formula is a clinically balanced combination of 4% naturally derived Azelaic Acid and 2% Niacinamide. According to Medicube, this combination helps purify the skin, balance oil and moisture, control excess sebum and visibly improve the appearance of skin clarity, tone and texture with minimal irritation.

The formula also includes Aloe Vera Leaf Extract, Centella Asiatica Extract, Sodium Hyaluronate, Ceramide NP and Ceramide AP. Together, these ingredients complement the toner with hydrating, soothing and skin-barrier-supporting care.

Key Benefits: Helps control excess sebum and oiliness; soothes the appearance of redness associated with dryness; helps improve uneven-looking skin tone and texture; provides lightweight hydration; supports the skin's moisture barrier; and promotes a clearer, smoother and more balanced-looking complexion.

Medicube also reports clinical testing results. After one use, the product was measured to help protect the skin's natural barrier by 48.14% and provide a cooling sensation of up to -37.4°F. After two weeks, Medicube reports an 11.88% improvement in excess sebum and 6.74% improvement in overall skin tone. The company notes that results can vary depending on individual skin type.

How to Use: After cleansing, apply an appropriate amount to the face using your hands or a cotton pad. Gently pat until completely absorbed, then follow with serum and moisturizer. Medicube notes that because azelaic acid naturally occurs in powder form, a slight white residue may sometimes appear; this is described as a normal characteristic of the formula rather than a product-quality issue.