NON-IRRITATING, LOW pH FORMULA (WEAKLY ACIDIC): SoonJung's formula helps women and men's skin to maintain the correct, low pH level. Chemicals with an alkaline pH are detrimental to skin's protective barrier, making it more prone to dryness and other various external factors. Low pH products calm down, rejuvenate (anti-aging effect) and take care of your sensitive skin. There is seal only on the top side of the box due to the label on the bottom side.