For me a Halo kept the sweat at bay a little longer and then just wetted-out and needed removing and wringing out every 10mins. It ended up being more annoying than riding without.
The only sweatband thing that’s ever worked well for me is the SweatGutr type. Buffs are just too warm, even though they are better than a Halo in that they don’t release a deluge of liquid when you so much as twitch an eyebrow.
I also tried a MET/Bluegrass helmet with the silicon pad at the front. That was just uncomfortable, and the gaps in the pad direct all sweat directly into your eyes.