Then check for ferulic acid, which helps lower the pH level of vitamin C to below 3.5% so your skin can easily slurp up the cocktail. Exposure to air, light, and heat can degrade your serum.

This serum contains 2% stabilised glutathione, alpha arbutin, and kojic acid, making it 10x more effective than Vitamin C for fighting pigmentation. This kojic acid serum also contains a mulberry ...