Yes it is safe. the stud will fit tight and you become used to it over time. 16g doesnt make the hole bigger. So you dont have to worry.
How snug should a nose ring be?
Should my nose ring be tight? No, your nose ring should not fit tightly. If you feel pressure on your piercing after inserting your hoop, or you have a difficult time fully closing your nose hoop, then the inner diameter you're wearing is too small.
What size nose ring do they pierce with?
Nose piercing is usually done with an 18 gauge (1.02mm) post. After a nose piercing heals, most people switch to a 20 gauge (. 81mm) post because it is thinner and leaves a smaller hole. A post thinner than 20 gauge is not recommended for most nose piercings.
For high nostril piercings, thicker jewelry tends to work better. That's why high nostrils are typically pierced at a 16 gauge or even a 14 gauge. Your piercer should provide information about which gauge you were pierced at so you know which size jewelry to buy in the future.15 nov 2021
What is the diameter of a 16G septum ring?
. 1.2mm
Is 18g bigger than 16G septum?
When learning about piercings sizes you will know that the bigger the number the smaller the gauge of the piercing so yes you may use an 18g. the 18g is smaller than the 16g. Just be aware though that sometimes user smaller jewelry could cause your jewelry to get accustomed to that size.