PDRN HYALUR ACID MSTR CLNS FOAM 5.07OZ. Benefits: Hydrating foaming cleanser formulated with. PDRN (salmon DNA) and hyaluronic acid, helping to maintain moisture throughout the day.. Key Ingredients: PDRN (Salmon DNA): Boosts skin appearance through the synergy between key ingredients. HYALURONIC ACID: Provides deep hydration, keeping your skin soft and smooth. HYDROLYZED COLLAGEN: Helps to maintain the skin's moisture barrier. Research Results: Skin irritation test completed. Sensitive skin irritation test completed. Eye-irritation test completed. 26.305% improvement in waste(sebum) in pores cleansing. 80.241% improvement in sunscreen cleansing. 83.054% improvement in artificial ultrafine dust cleansing. 1.094% improvement in makeup product cleansing. 10.779% improvement in skin moisture(hydration) when used with the basic method. 102.445% improvement in kin moisture(hydration) when using the foam cleanser and basic product together compared to using basic product alone. 15.538% improvement in skin tightness. 2.226% improvement in inner skin hydration immediately after use / 3.484% improvement after 1 week of use. 19.617% improvement in skin moisture(hydration) when used with the Pack-to-Foam method. 5.022% reduction in Transepidermal Water Loss immediately after use / 7.696% reduction after 1 week. 118.757% improvement after use / 86.037% improvement after 5 uses / 65.752% improvement after 10 uses Significant improvement in hydration of the 10 layers of skin stratum corneum by product absorption. 69.549% improvement in skin barrier caused by external stimulation. 39.079% improvement in skin soothing caused by external stimulation.