CICA & Niacinamide Serum for Combination & Oily SkinFor Combination & Oily Skin. Pore Refining & Redness Relief with 4D Hyaluronic Acid Finding a serum for combination skin is often a balancing act. Most products are either too drying for your cheeks or too heavy for your T zone, leaving you with a complexion that feels "unstable." This imbalance often leads to a mix of dry, flaky patches and oily areas with enlarged pores, making it difficult to achieve a smooth, even skin texture or a consistent