I swish with H2O2 before brushing with baking soda. I also add two or three drops of Dr. B-----'s liquid soap (peppermint) on top of the baking soda. Once in a blue moon I'll put a drop of oil of oregano on my toothbrush such as after I've been sick or if I feel like I'm trying to catch a cold/flu or something. My teeth have really whitened up since I've been doing this. I've also noticed that the sensitivity has totally gone away too. I haven't used toothpaste since, don't want the poison fluoride. Been doing this for approximately six months now. Dentist appt is coming up. We'll see how that goes.
What I've been doing for ages now is take one capful of peroxide dunk my toothbrush in it to moisten it then dip it in baking soda, I then take the capful of peroxide and dump it under my tongue and then proceed to brush with it, it will foam up get ready for that, I brush for two minutes then I spit it all out and rinse and then I use toothpaste to coat my teeth with whatever ingredients toothpaste has to further protect my teeth and also have the chance to scrape my tongue with the toothpaste to get rid of any excess peroxide. I do this about once or twice a month. My friends started questioning why I had such white teeth so I had to tell them my secret, some of them have done it daily, I've seen the results and they are so happy. But my teeth are white and don't need any more than what I do, as you go along you know what works and what doesn't. I'm 53yrs old and have beautiful white teeth because of the care I took throughout the years.
My understanding on this is that you find peroxide included in all of your teeth whiteners that are sold and we have toothpaste that has baking soda, so I went full strength with both to get the best effect.
Having noticed that I was developing two quite noticeable stains on my upper 2 front teeth from coffee, I was concerned about yet another dental bill. I didn't want to buy commercial teeth whiteners so I thought I'd check EarthClinic before I made my appointment. One reader had recommended brushing with hydrogen peroxide and baking soda. I thought she meant that 'with time' the stains would go away. I immediately went in to brush these 2 teeth and within 30 seconds, both stains were completely gone! Be warned that if you have an electric toothbrush---your surrounding gum tissue may turn white but it only lasts 20 minutes or so. I am very pleased.