 So, you wish there was a way to smooth things without subdivision, not a problem. On the right under defamation, there are two main tools I recommend you use. The first one is polish by features. Let's say you wanted to soften this curve up. Most people would probably just divide. But something else you can do is polish by features. See this? The poly count is the same. But it's still smoother because ZBrush reduced any sharp angles. Normally this dot limits the effect of this feature, but if you ever need to aggressively smooth something, turn off the dot and try again. Then it will smooth extremely hard. Now the one I use the most is polish by groups. Here you can see when I polish the head looks great, but I lose some of the detail lines up here. Now the easy solution is to simply turn that part of the head into a poly group. And instead of polishing by features, polish by groups. And now you can see when it smooths, it keeps the lines I wanted clean and sharp. This is an excellent way to quickly smooth poly group meshes before retopologizing in Zremesha. Anyway, hope that helps and as always I hope you have a fantastic day and I'll see you around.