[Cardiologist2]

Novamin is very different from other toothpastes. I can feel it with my tongue - my teeth become glassy/hard in like 10 min, and the effect persists to the next day. I can’t speak to anyone else’s experience, but I can detect a scam toothpaste pretty quickly & send it back.

[alanbernstein]

I tried the sensodyne version once, after buying from Amazon. That's not how I would describe it, instead the paste had an unusual warmth to it. Does that sound familiar to you? I'm just asking because I'm curious if I got the real stuff or not, no real way to know.

[ValentineC]

I've used retail Sensodyne with NovaMin. I second the feeling of warmth after brushing.

[Cardiologist2]

It doesn’t, but there might be variation between people? For me the toothpaste (sensodyne novamin) has a slightly crunchy feel, and yeah, the smooth glassy coating.

https://www.amazon.com/Sensodyne-Repair-Protect-Whitening-To...

I also use an electric toothbrush, so that might make a difference.