1.I got one 2 months ago and it still hurts to take it out but you have to clean the inside so yeah maybe lyk 1 month.
2.my sister got one donea day after me because she liked it and hers is silver mine is gold and there isn't much difference.
3. maybe because its 2 days a couple of hours and it would probably scab up
By the way if you clean using salt and water tea tree oil is much better