A beauty hydrating makeup primer for oily/combination skin in a 90 ml size is a large-format, multifunctional base product designed to balance hydration while managing excess oil. It creates a smooth canvas for makeup, helps reduce the appearance of pores, and ensures makeup lasts longer without feeling heavy or greasy. [1, 2, 3, 4, 5]
Based on typical market offerings for this type of product, here is a detailed breakdown:

Key Features and Benefits
Hydrating Oil Control: Specifically designed for oily/combination skin, this primer hydrates dry areas (like cheeks) while controlling sebum in the T-zone, preventing the “makeup meltdown” often caused by oily skin.
Large 90 ml Size: This is a high-volume, cost-effective, or professional-sized packaging (most standard primers are 30 ml), making it ideal for daily use or makeup artists.
Pore Blurring: Contains formulas that fill in pores and fine lines, providing a, smooth, “filter-like” finish to the skin.
Lightweight Formulation: Usually water-based or gel-based, allowing the skin to breathe while delivering nutrients like hyaluronic acid. [1, 2, 3, 4, 5]

Common Ingredients
Hyaluronic Acid: Provides oil-free moisture to the skin.
Niacinamide: Helps regulate sebum production and minimize pores.
Aloe Vera or Witch Hazel: Often added to soothe the skin. [1, 2, 3]
How to Use
Cleanse & Moisturize: Start with a clean face.
Apply: Apply a small amount (pea-sized for the whole face) focusing on areas with open pores and oily zones (T-zone).
Set: Let it settle for 1–2 minutes before applying foundation.