We made Willo for kids because they (and their parents’ sanity) needed it the most.
However, we’ve heard loud and clear that adults want to use it too, so we’re working on ways to release Willo for adult use. If you are an adult whose kid is using Willo at home, you can try it but should note the experience will not be the same as for your kid.
Adults will notice a different level of efficacy and comfort, and may experience gum bleeding, as they are more likely to have higher levels of gum inflammation.