Purchased in late October. I think I used it for about 3 or 4 days. I stopped using it because the stickiness bothered me. Remaining amount (see photos ⑤ and ⑥) This is a serum that uses ultra-penetrating vitamin C derivative to improve pores and dullness, and give the skin firmness. - Brand: unlabel LAB - Product Name: VITAMIN C 100% ESSENCE PREMIUM - Features: Ultra-penetrating vitamin C derivative - Effects: Improves pores, dullness, dryness, and firmness - Volume: 30ml Thank you for viewing.