COSRX The Niacinamide 15 Serum 20 ML — made in South Korea. Serum – Highly concentrated 15% niacinamide serum that helps control excess sebum and minimises…
COSRX The Niacinamide 15 Serum 20 ML, sold under the COSRX brand, is manufactured in South Korea. That origin is recorded at the "Internet-Sourced" evidence grade.
Origin evidence last reviewed 2026-10-27.
Every origin claim on Hesperia Market is graded by the strength of its evidence and linked to its sources.