Will Silly Putty dry out if its not replaced in the egg?

SILLY PUTTY is made primarily from silicone and color pigments.  Silicone is an oil-based product and by nature will not dry out.  If Silly Putty is left out of the container over a period of several years, it may harden due to other ingredients contained in the putty.  The other ingredients are proprietary and cannot be shared.