Biocorneum Advanced Scar Treatment by Sientra. This bottle is 3.35 fluid ounces so it is very large. My physician's office sells the 3/4 ounce bottle (which is tiny) of this for $89. This bottle is 3.35 Fluid ounces so this bottle is 4 times the size that my physicians office sells for $89. Product expired on 09/2023 but I am selling these for $22 each. Shipped from a smoke free and pet free home.