I recommend these bangs hair rollers!

This is the FilliMilli hair roller sold at Olive Young, and it's huge, isn't it? It's the perfect size for bangs. If you wrap it around your bangs, leave it for a while, and then take it off, it might look a bit weird and puffy for a moment, but with just a few combs, your bangs will look natural and pretty. If you have long bangs, you can create lovely side bangs with this! The staying power is also pretty good.