Yes, have been using Sensodyne for years. Haven’t had sensitivity issues in a long time. The toothpaste with Novamin works better and has other benefits, but is significantly more expensive than the Pronamel line (also available at Costco!) which is cheaper but also effective against sensitivity imo

I haven’t used it in a while, but yes, it did. It took a while to be effective, and it did eventually plateau, but even though I no longer use it my teeth are far less sensitive than they were 10 years ago.