I recommend Pongdang Real Effect Vita Toning Serum.

The serum I use is Fondang's Real Effect Vita Toning Serum! I love this product because it is a dual-functional cosmetic for both whitening and wrinkle improvement. It contains niacinamide, a representative whitening ingredient that inhibits free radicals in the skin, and hyaluronic acid, making it very moisturizing. It also has a refreshing texture, so it is great to use in the summer! Additionally, the pump dispenser makes it convenient and hygienic to use. The serum has a gel-like texture, giving it a moist and cooling sensation. It is so full of moisture that it absorbs immediately into the skin; it deeply nourishes even the dry, sensitive areas, calming them down. Since it is suitable for all skin types, regardless of dry or oily skin, anyone can give it a try. I am not sure what the exact scent is, but I like the unique fragrance of Fondang products. It has a calming scent, so I recommend it~