OSUFI Collagen Face Serum 300ml. Osufi collagen face serum. Anti-aging, moisturizing, and brightening serum. Made in Korea. Net weight: 300 ml. For those who want to keep themselves beautiful and fresh, this serum is for you. Benefits: It contains direct collagen that makes your skin look like glass skin from 7 layers deep. It thickens the skin and repairs thin skin. It prevents signs of aging on the face. It will tighten your skin. It will give you glass skin. It will smooth your skin. It will make your skin fair and glowing. It helps night creams work better. It removes side effects and makes skin baby-soft. The more serum you apply, the more beautiful your skin will remain. Usage: Before sleeping at night, clean your face with face wash, take 2-3 drops of serum in your hand, and apply it all over your face. Wash it off in the morning.