The RetinoTime Trial Set x 2 Sets A 7-day trial set containing retinol and hyaluronic acid. - Set Contents: 7-day trial set - Product Name: THE RETINOTIME - Volume: 30ml each - Key Ingredients: Retinol, Hyaluronic Acid - How to Use: After washing your face, apply an appropriate amount to the skin. I purchased this for a trip but am selling it because I won't be using it.