I recommend a serum that I'm using for home care these days.

Is there anyone whose inner dryness gets particularly worse during the changing seasons? My skin is exactly like that, so I pay extra attention to what I apply in weather like this. Since I’m so focused on hydration these days, I’d like to introduce a product I’ve been using with great satisfaction. It is the Dive In Low Molecular Hyaluronic Acid Serum.
Some of you may already be familiar with this as a famous Olive Young hydration serum. It is said to be a product that replenishes moisture deep within the skin by complexly blending five types of high, medium, and low hyaluronic acid. They claim it enables a synergistic effect where high molecular weight forms a moisture barrier, medium molecular weight provides hydration, and low molecular weight enhances moisturizing power, resulting in skin that is hydrated on the surface and hydrated on the inside. Since that is a bit technical, let's move on to my personal review. It is non-irritating, absorbs incredibly well, and has excellent moisture retention. Honestly, it is difficult to feel hydrated from within the moment you apply something, but with this product, you can really feel the moisture deepening. This product is great for use day or night, but I use it intensively during my night care routine. At night, I apply the Dive In Low Molecular Hyaluronic Acid Serum in two layers, followed by a moisturizer. I am confident that doing this will allow even those with extremely dry skin to wake up the next morning feeling hydrated. If you have severe inner dryness, give it a try!