Opened in August 2025. I used it only once, taking it on my palm with the included dropper. I believe there are no hygiene issues. I received it from someone who loves beauty products, but I don't have a chance to use it, so I'm selling it. It has higher absorption than conventional vitamin C, prevents spots and freckles caused by sun exposure, and leads to bright, translucent skin. Pores Blackheads Also effective in controlling sebum. ◾︎VC Conc Contents: 30mL Unopened item ◆Multiple of the same items are on sale! ◆Discounts are available for combined purchases and shipping with other products. Please comment in the comment section with the items you wish to purchase together. Ingredients: Water, Glycerin, BG, Pentylene Glycol, 3-Glyceryl Ascorbate, Bisethoxy diglycol cyclohexane-1,4-dicarboxylate, Sodium Ascorbyl Palmitate Phosphate, 3-O-Ethyl Ascorbic Acid, Glyceryl Ascorbate, Hydroxypropyl Methylcellulose Stearoxy Ether, Citric Acid, Sodium Citrate, Pentetic Acid 5Na