Can you put peroxide on a belly button piercing?

No, when I got my belly button pierced my piercer told me specifically not to use peroxide or alcohol on the piercing. If peroxide or alcohol gets on it, it'll be fine but it dries out your skin which isn't good for healing or cleaning. Use soapy warm water and a sea salt water mixture to throughly clean your piercing, that's what I used, as I was following my piercer's instructions. I've had my piercing for almost 7 months and I've never had a problem with it.