I learned about this many years ago and the difference after I started using only SLS-free toothpaste was night and day. I used to get canker sores (mouth ulcers) any time I would bite the inside of my cheek, hit my gums with the hard parts of my toothbrush, etc., and this completely stopped a while after I switched to SLS-free.

SLS is Sodium Lauryl Sulfate, by the way, and it’s a detergent. From what I understand, the only reason why it’s added to toothpaste is to make more foam when you brush. But the SLS-free toothpaste I use makes plenty of foam, so I have no idea why they add it. It’s one of those things about the modern world that makes absolutely no sense. The ads and packaging should say in big letters: “now with even more canker sores!”

Unfortunately, the vast majority of toothpastes on the market (at least in the US) have SLS. I can only seem to find SLS-free toothpaste in natural food/supplement stores. It’s extra difficult to find toothpastes that are SLS-free but that keep fluoride too. The difficulty (and price? I haven’t compared) is completely worth it to me though.

TL;DR: The SLS (Sodium Lauryl Sulfate) in most toothpastes is unnecessary and (edit: CAN cause) canker sores (painful sores in your mouth and gums). If you have this problem, you will likely benefit from SLS-free toothpaste (some still include fluoride) that you can usually find at natural food stores.

  • @tangentzeroee@lemm.ee
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    487 months ago

    Most stores (in US) have Sensodyne. I switched to them when I learned that my old toothpastes were causing cankers. I’ll never go back

    • @alfisya@lemm.ee
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      127 months ago

      We have two brands that have that, Sensodyne and Enzym. Both are nearly twice the price as other brands.

    • @xaprOP
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      17 months ago

      This is great to know! I thought that Sensodyne only addressed tooth pain.

    • Thassodar
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      07 months ago

      Bert’s Bee’s makes an SLS free charcoal toothpaste that I’ve been using over a year. Great stuff, mint flavored, and you can see how much toothpaste you aren’t using (since it’s black) and adjust your usage accordingly.

      Even using a pea sized drop seems like too much sometimes.

      • @xaprOP
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        17 months ago

        That sounds good. I’ll look for that. Does it have fluoride though? I want fluoride in my toothpaste. Also curious about Bert’s Bees. Does the toothpaste have any bee products in it? Thanks.

    • @TheSlad@sh.itjust.works
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      -67 months ago

      Sensodyne has SLS too. Its largely a scam toothpaste to be honest. It just has a numbing agent in it and costs twice as much. Maybe youve just gotten lucky but that shit was useless for me and still gave me sores.

      • @ctrowat@lemmy.ca
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        117 months ago

        Sensodyne is a brand, not a specific toothpaste, and some of their products do have SLS, but sensodyne pronamel, at least here in Canada, does not have SLS.