My one year old is bitting how and breaking skin how do I stop him from bitting.

You got to introduce him on how to express his feelings. Say I know you are upset but biting doesn't help. You can distract him by giving him a toy.

Emotional regulation, time out, or I heard a lot of moms bite back to show them it’s not okay.

I would advise to redirect the first time. If he continues, explain that teeth are not for biting, it hurts- using slightly exaggerate facial expressions and gestures and then move him away to “keep mama safe”. There’s actually a book called “Teeth are not for Biting”. I used another one with my daughter from the same series, the “Hands are not for Hitting”, we read it each time she hit me or her dad and they explain and illustrate what things teeth/ hands etc can be used for instead. She has stopped hitting since either the book helped or she grew out of it who knows. I think it’s worth a try to get some visual learning material to help promote his understanding of what’s happening. You could even get him a chewie toy to bite down onto in the case it is a sensory issue or teething related. Toddlers are impulsive and annoyingly it’s very common at this age and stage to hit/ bite/ kick and test boundaries or take their frustrations out on other people.

If he’s in your arms put him down right away. Let him know that you won’t hold him if he bites mommy

🙋‍♀️ old parenting type bite him right back my kid got in a stage of pulling hair I’d tug his back. He no longer pulls hair. I’m not about gentling parent all the way sometimes ur kid does need a little pop on the ass 🤷🏼‍♀️