Vitamin C serums have become a skincare staple, but not all formulas are created equal. In this review, we tested five popular vitamin C serums over four weeks to evaluate their brightening power, texture, and overall skin results.
Our testing group ranged from dry to oily skin types, with each participant using a different serum daily. We tracked hydration levels, tone evenness, and visible glow. The standout performers achieved noticeable brightening within just two weeks, with stable formulations that resisted oxidation.
Key takeaways: look for serums packaged in dark glass bottles to preserve potency, formulations with at least 10 percent concentration, and complementary ingredients like vitamin E and ferulic acid. The winning serum delivered visible glow without irritation across all skin types.
