What is a Serum in K-Beauty?
In K-beauty, a serum is a highly concentrated skincare product designed to deliver active ingredients deep into the skin. Serums typically have a lightweight, fast-absorbing formula that targets specific skin concerns such as acne, pigmentation, or dullness. They are used after cleansing and toning but before moisturisers to maximise efficacy.
 
Cos De BAHA Azelaic Acid 10% Serum – Product Benefits
This serum contains 10% azelaic acid, known for its potent anti-inflammatory and antioxidant properties. It helps to reduce redness, fade acne scars and hyperpigmentation, regulate sebum production, and improve overall skin texture. Ideal for calming sensitive or acne-prone skin, it promotes a clearer, more even complexion.
 
How It Works Scientifically
Azelaic acid inhibits the growth of bacteria responsible for acne while gently exfoliating dead skin cells to prevent clogged pores. It also suppresses melanin production, which helps to lighten dark spots and pigmentation. The result is reduced inflammation, smoother skin, and diminished blemishes without irritation.
 
Suitable Skin Types
Oily and acne-prone skin
Sensitive skin needing soothing effects
Combination skin requiring balanced sebum control
Skin with hyperpigmentation or uneven tone
 
Key Ingredients
Azelaic Acid (10%): Reduces inflammation, kills acne-causing bacteria, and fades pigmentation.
Niacinamide: Supports skin barrier function and brightens skin.
Sodium Hyaluronate: Provides hydration without clogging pores.
 
How to Use
Evening only: After double cleansing and toning, apply 2–3 drops of the serum onto dry skin. Gently pat until fully absorbed, then follow with your moisturiser.
Use sunscreen during the day when using this product regularly, as azelaic acid can increase photosensitivity.
 
Enhance your evening routine with Cos De BAHA Azelaic Acid 10% Serum for clearer, calmer, and more radiant skin.