The Ordinary Niacinamide 10% + Zinc 1%

The Ordinary Niacinamide 10% + Zinc 1% is a $6 serum that costs 85% less than #7 Charlotte Tilbury Flawless Filter yet reduces pore size by 20% within four weeks, according to a 2023 independent lab test. Its clinical, single-ingredient formulation has made it the most disruptive beauty brand of the 2020s, outselling products 20 times its price by leveraging cost-plus pricing. TikTok's 'skincare is science' movement drove over 500 million views, positioning this niacinamide serum as the gateway to ingredient literacy for a generation that values transparency over luxury packaging. The zinc component controls oil production more effectively than the average niacinamide serum, as measured in a 2024 comparative study.