I use jojoba oil on everything :) I always slather my silicone in it with no problems at all.
(I wouldn't stretch with silicone)
Current mods: 7/16" lobes, secondary standard lobes, 14g conch, 14g orbital, 14g industrial, 6g tongue, 14g navel, 14g nipples, 10g septum (Septum Klub 2K7!!1!), two happy tattoos