Figure 2.
In vitro skin corrosion test using KeraSkinTM treated with zinc oxide nanoparticles (ZNPs), titanium oxide nanoparticles (TNPs) and their mixtures. (A) Cell viability was measured after 3 minutes treatment of test materials. (B) Cell viability was measured after 60 minutes treatment of test materials. The viability of human skin model was greater than 50% for 3 minutes treatment and 15% for 60 minutes treatment. PBS, phosphate buffered saline. *p<0.05, ***p<0.001.