... increase the presence of retinoic acid, effecting skin hydration.Specifications: Test ItemsSpecificationTest ResultsAppearanceWhite powderWhite powderGlucuronic Acid (%)≥44.046.29Sodium hyalunate (%)≥91 ... .8-2.0)*1061.34*106Protein,%<0.050.020Loss on Drying≤10.06.74Residue on Ignition, %≤2014.85Heavy Metal(as Pb), ppm<20 ...