Blue Skin Care Moisturizing Wipes contain a minimal amount of preservatives and disinfectants at 0.3%, without propylene glycol. They contain hyaluronic acid (a moisturizing ingredient) to keep skin healthy. The pH is very close to the skin's weak acidity. The Blue Skin Care Moisturizing Wipes have a 10% increase in thickness, and they implement a reverse osmosis membrane, which is very close to the theoretical water.