Vitamin C, or ascorbic acid, is a powerful antioxidant with numerous skin benefits. Vitamin C is commonly found in skincare products, especially serums. It boosts collagen production, brightens skin tone, and protects against environmental stressors. The effectiveness of vitamin C in serums, however, depends on the pH level of the product. The purpose of this … Continue reading The Impact of pH Levels on Vitamin C Serum Efficacy in 2023