Acidification of the Skin and Maintenance of the Physiological Skin pH Value by Buffered Skin Care Products Formulated around pH 4

Each biological system possesses a widely unrecognized buffer to maintain acid-base balance specific pH. The skin pH is crucial for physiological function. In aged or diseased skin, increase observed and may negatively affect health. Skin care products with that slightly more acidic than the average normal have an adequate buffering capacity, are considered beneficial skin. However, capacity of these also plays important role. present study, possible normalization acidification surface influence on hydration barrier function was assessed via application buffered formulated ? 4.5. 48 subjects above 50 were treated three different (Vitamin C Spheres, Collagen Spray, Mask) pH, integrity before treatment start after 4 weeks. results show 4-week Vitamin C, acidified. Treatment Spray Mask showed maintenance Subgroup analysis had higher at study demonstrated all tested able acidify surface. addition, increased two products, whereas not significantly changed. This demonstrates 4.5 contribute