Glycerine is a viscous liquid that can be used to preserve leaves on stems without pressing. This method of preserving leaves gives them a more natural appearance appropriate for dry arrangements. To preserve leaves and branches with glycerine, cut the branches 4 to 6 inches longer than you want the finished product. Cut branches in the morning. Glycerine can be used as a moisturizer to treat or prevent dry, rough, scaly, itchy skin and minor skin irritations e.g., diaper rash or skin burns from radiation.