This retinol serum contains hyaluronic acid to support skin hydration and barrier function. - Brand: YOUNGCOME - Product Name: RETINOL COLLAGEN COMPLEX - Volume: 30ml - Features: Day & Night Essence - Ingredients: Hyaluronic Acid (HA) - How to Use: Apply an appropriate amount to the skin. - Precautions: For external use only. Everything in the photo is included. Although unused, there may be scratches or other imperfections due to storage. Please refrain from purchasing if you are concerned about this. Thank you for looking.