Loose device feeling post-bath

Does anyone else here notice this happening occasionally? After soaking in a warm bath for a while, I put my device back on and the fit feels looser than usual. However, after waiting an hour or so (sometimes longer), it starts to tighten up—which is actually nice because it feels better! Also, I’m hunting for an anti-slip cream to apply down there before locking in. I know pole dancers use something similar on their hands, but I wonder if it’s safe for this purpose? Thanks!