EXOSOME OCA SERUM, a serum that supports cell regeneration. - Brand: medicube - Product Name: EXOSOME OCA SERUM - Contents: 30ml - Country of Manufacture: KOREA - Condition: Used, tested - Regular Price: Approximately 2500 yen Thank you for viewing. I used this about 3 times to see the effects. It didn't suit me as I have a tendency towards atopic dermatitis, so I am selling it. When using, I made sure not to touch the dropper directly, so the condition is clean, but I was concerned about the ingredients, so I have drawn a line on the box with a ballpoint pen.