The expiration date is December 31, 2024. Due to the fact that there are so many fraudulent Skin Medica products sold online, I had to call Allergan Co. and give them the lot number on the bottom of the box in order for them to be able to give me the expiration date. SEALED & UNOPENED. SkinMedica HA5 Rejuvenating Hydrator provides immediate smoothing in the appearance of fine lines and wrinkles, immediate hydration, improves the appearance of skin texture and roughness and supports the skin's natural ability to replenish its own hyaluronic acid for overall skin health. SkinMedica recommends the use of products within 2 years of opening. That said, the regular use of this product upon opening will finish well before the 2 year period ends. PLEASE NOTE before making your offer that Poshmark keeps 20% of sale. Discounted shipping. I accept reasonable offers. Bundle discounts. Happy to answer questions. I ship promptly.