The Ordinary vs COSRX: Which Niacinamide Wins?
K-Beauty Dupes · Niacinamide · Serum Showdown The Ordinary vs COSRX: Which Niacinamide Actually Wins? Both bottles promise pore-minimising, skin-brightening, blemish-fighting niacinamide. One costs $6. One costs $15. They are not the same product, and which one wins depends entirely on what your skin is actually dealing with. Let's settle this properly. If you have been in K-beauty spaces for more than five minutes, you have seen this debate. The Ordinary Niacinamide 10% + Zinc 1% is one of the best-selling skincare products on Amazon, full stop, over 100,000 units bought in a single month. COSRX's 15% Niacinamide Serum sits on the K-beauty side of the same shelf and charges two and a half times the price for a much smaller bottle. The obvious question is: Is the COSRX worth it? Or is The Ordinary a dupe good enough to save you the money? The honest answer is that they are solving slightly different problems, and once you understand what niacinamide actual...
