Description

Salicylic Acid or Azelaic Acid: Often included to exfoliate dead skin cells, unclog pores, and reduce the frequency of active breakouts.
Soothing Agents (Cica/Calendula): Ingredients like Cica or Calendula help calm inflammation and redness caused by recent acne.
Hydrators (Hyaluronic Acid/Squalane): Provide essential moisture without a heavy feel, ensuring the skin remains plump and healthy. 
Key Ingredients & Benefits
Niacinamide (Vitamin B3): The “hero” ingredient for oily skin. It regulates oil production, minimizes the appearance of enlarged pores, and strengthens the skin’s natural barrier.
Alpha Arbutin / Vitamin C: Powerful brightening agents that inhibit melanin production to fade existing dark spots and prevent new ones from forming.
Zinc PCA: Often paired with Niacinamide to further control shine and soothe inflammation.
Salicylic Acid (BHA): Gently exfoliates inside the pores to clear congestion and improve overall skin texture.
Hyaluronic Acid: Provides deep hydration without adding oil, keeping the skin plump and healthy. 

How to Use
Cleanse: Start with a clean, dry face to remove excess oil.
Apply: Use 2-3 drops (or 1-2 pumps) of the serum. Focus on areas with visible spots or high oiliness.
Pat: Gently press the serum into your skin until fully absorbed; do not rub harshly.
Protect: During the day, always follow up with a broad-spectrum SPF 30+ sunscreen to prevent sun-induced darkening of spots.