Vitamin C serums are seemingly everywhere and for good reason—this powerhouse antioxidant and skin brightener is one of the most effective skincare ingredients out there. But vitamin C is notoriously fickle. It can degrade and lose its potency over time or when exposed to light and heat.
Our team of researchers and testers researched and tried hundreds of vitamin C serums on the market to find the best of the best. Testers looked at various factors, including company ethics, quality, efficacy, results and value. They also looked for the most effective forms of vitamin C and other anti-aging ingredients. These “Top 5” best vitamin C serums stood out.