Ycode crafted its serum for the unique characteristics of men's skin, blending different kinds of ingredients for deep and lasting results. Chlorella, a wild-harvested microalgae, helps skin adjust its moisture to changing conditions. Hyaluronic acid delivers hydration at several depths, while niacinamide, a form of vitamin B3, evens tone and strengthens the skin barrier. It comes in a 0.85-fluid-ounce airless pump bottle that doses precisely and protects the integrity of the ingredients from air. In a self-reported survey of 50 men who used it twice daily, 98 percent said their skin felt hydrated after four weeks. The water-light formula soaks in within seconds, leaving no residue or shine, and a moisturizer can be applied once it absorbs.