Description

An Acne & Oil Control Serum designed for dry skin is a specialized formula that balances sebum production while providing necessary hydration, ensuring the skin barrier is not stripped or dried out. 
Here is a general English description of such a product, suitable for a 90ml size:

Product Overview
A potent, hydrating, and lightweight serum formulated to tackle acne, whiteheads, and blackheads on dry, combination, or sensitive skin types. This serum regulates sebum production in the T-zone while supplying essential moisture to dry cheeks, offering a clear, matte look without tightness or dryness. 

Key Benefits
Targeted Acne & Oil Control: Effectively reduces active acne and prevents future breakouts by gently unclogging pores.
Deep Hydration for Dry Skin: Infused with hydrating agents that keep the skin balanced and comfortable, combating the dryness often caused by anti-acne ingredients.
Barrier Protection: Strengthens the skin barrier, reducing sensitivity and irritation.
Refines Texture & Fades Marks: Minimizes the appearance of pores and helps fade post-acne marks and blemishes.
Matte Finish: Regulates oil to leave the skin feeling soft and smooth with a non-greasy finish. 

Key Ingredients (Typically Found)
Salicylic Acid (BHA): Gently penetrates deep into the pores to remove excess oil and dead skin cells.
Niacinamide (Vitamin B3): Repairs the skin barrier, regulates sebum, and minimizes pores.
Hyaluronic Acid/Aloe Vera: Provides necessary hydration and soothing properties to keep dry skin nourished.
Zinc PCA: Balances oiliness and helps reduce inflammation. 

How to Use
Cleanse your face with a gentle cleanser.
Apply 2-3 drops of the serum to the face and neck.
Gently tap or massage into the skin.
Follow with a hydrating moisturizer.
Use in the AM/PM. For beginners, start with alternate days.