Description

Based on the search results, several brands offer “Acne & Oil Control Serums” suitable for all skin types, with key ingredients like Salicylic Acid, Niacinamide, and Azelaic Acid. While 90 ml is a large size for a serum, the following descriptions cover the active features and benefits of topically applied Acne & Oil Control Serums for all skin types. 
Product Description: Acne & Oil Control Serum (For All Skin Types)
This lightweight, non-greasy serum is formulated to tackle acne, reduce excess oil, and minimize pores, making it suitable for all skin types, including sensitive skin. It is designed to provide a matte finish throughout the day while keeping the skin hydrated. 
Key Features & Benefits:
Deep Pore Cleansing: Contains Salicylic Acid (BHA), which penetrates deep into the pores to dissolve dirt, sebum, and dead cells, effectively reducing acne, blackheads, and whiteheads.
Oil Regulation: Enriched with active ingredients like Niacinamide or Zinc PCA to balance sebum production, preventing excessive shine without over-drying the skin.
Acne & Mark Reduction: Targets active breakouts and helps fade acne marks, hyperpigmentation, and reddish-purple scars, leading to a clearer, more even skin tone.
Soothes Redness & Inflammation: Formulated with calming agents like Witch Hazel, Cica Extract, or Allantoin to reduce inflammation and calm active, irritated blemishes.
Strengthens Skin Barrier: Supports skin resilience and keeps the skin hydrated while controlling oil.
Lightweight Formula: Fast-absorbing and non-sticky texture, making it ideal for daily use under moisturizers. 
Key Ingredients:
Salicylic Acid (2%): For unclogging pores and treating active acne.
Niacinamide (Vitamin B3): For reducing oil, fading spots, and strengthening the barrier.
Azelaic Acid: For calming redness and treating acne.
Zinc/Witch Hazel: For oil control and astringent properties. 
How to Use:
Cleanse your face thoroughly.
Apply 3-5 drops of serum to the entire face and neck.
Massage gently until absorbed.
Use daily (AM/PM) and follow with sunscreen during the day.