anua Anua ▶ Retinol 0.3 Niacin Renewing Serum Price not negotiable Instant purchase OK Used about 4-5 times, but it didn't agree with my skin, so I'm selling it. I think about 90% remains. However, the packaging on the side is slightly peeled, so please purchase only if you don't mind. Recommended for those who were interested or want to try it out. No outer box. Will be shipped using the cheapest method with measures to prevent water damage.