Serums are one of the most effective products of skin care routines. Thanks to their light texture, they penetrate into the deep layers of the skin and deliver active ingredients directly to the target. When used regularly, skin serums provide many benefits such as equalizing skin tone, reducing fine lines and wrinkles, moisturizing, and removing blemishes. Moisture serum containing hyaluronic acid intensely moisturizes the skin and gives it a plump appearance. Vitamin C serum gives brightness to the skin with its illuminating effect, while providing protection against environmental damage thanks to its antioxidant properties. While blemish serum targets sun spots and acne scars, serums that increase collagen production give elasticity to the skin. Anti-aging serum varieties are ideal for anti-aging care. Under-eye serum reduces the appearance of dark circles and swelling. Serums containing salicylic acid or niacinamide provide a balancing effect for oily skin prone to acne. Before using the serum, the skin should be cleaned and toner should be applied, then a few drops of serum should be gently applied to the face. Serums, which are indispensable for the daily care routine, give the best results when selected according to the skin type. Those looking for the best skin serum should pay attention to the content and user comments. For effective results in skin care, regular use is as important as serum selection. Serums, which are also at the forefront of Korean skin care trends, maintain their rightful place in the beauty world.