Sure if you want it to fall out or shrink!
14 gauge is bigger, the lower the gauge size, the bigger it is
14g to 16g is normal for a male lip piercing, 16g to 18g is normal for a female lip piercing.
1.2mm / 16g to 1.6mm/ 14g
Industrials are done at 14g not 16g. The piercing should be done with a 12g needle and 14g jewellery.
14g is normal for a male lip piercing, 16g is normal for a female lip piercing.
16g is the most used you can also use 14g
Well 18g and 16g are neighbours in the gauge world, 14g is the next largest gauge from 16g so you would just be stretching the piercing up to 14g. All stretching should be done with proper tapers and ultimately done by a professional body piercer to ensure the piercing isn't torn in the process.
It depends on where you had it done, usually they are done at 14g but may be 16g.
16gauge is smaller. The larger the number, the smaller(thinner) the gauge
Ditch the safety pin. Go on eBay, buy a 14g piercing needle that's been packaged in a pouch and sterilized, and do it in one poke.
A labret (14g) or microlabret (18g ~16g) the length will be determined by your professional body piercer at the time of the piercing.
Usually lips are pierced with a 16g.