ROSAGE concentrated collagen gel 15 ml ROSÂGE concentrated collagen gel 15 ml is a powerful anti-aging product designed to nourish, hydrate and protect the skin. It contains a concentrated blend of collagen, elastin, and hyaluronic acid to help reduce the appearance of wrinkles and fine lines. The lightweight, non-greasy formula is quickly absorbed into the skin, delivering long-lasting hydration and improving the skin’s elasticity. It is ideal for all skin types and can be used both day and night to help keep skin looking youthful and radiant.