Peracetic acid degrades rapidly in contact with the skin; this explains the absence of systemic effects from skin contact. However, a sin damage can cause a systemic dose for a very short period of time. In vitro studies showed a rapid degradation of peracetic acid in rat's blood (in rat's blood diluted 1000 times, peracetic acid half-life was less than 5 minutes). That's why we expect its body's distribution to be very small after the exposure to concentrated solutions. Hydrogen peroxide degrades rapidly in oxygen and water,too. In the end, degradation products (acetic acid, oxygen and water) are processed metabolic physiological pathways.