I purchased the Effaclar Peel Care Serum from the official store, and it has an expiration date of December 2026. The remaining amount is about the top of the sticker (see photo 4). This item has been opened once, so please understand that it is a used item. Thank you. The samples are all new and unopened, and include the following 8 items: - Toleriane Yaku-yo Moisture Lotion (Medicated Lotion) - Effaclar Moisture Balance Lotion (Medicated Lotion) - Effaclar H Cream N (Moisturizing Cream) - Cicaplast Repair Cream B5+ (Moisturizing Cream) - Effaclar Peel Care Serum (Serum for Sensitive Skin) - Toleriane Allergo Cream (Moisturizing Cream for Sensitive Skin) - UV Idealia Protection Tone Up Rose (Sunscreen Milk) - Mela B3 Serum (Beauty Serum)