It is possible to cut parts of your hair (the same way with body parts) to hide it so it looks good while hats/hoods etc? Does it work on custom wearables too?

[-Winks] The only way would be to use or an older background item with the HA cutout in it to trim off anything outside of the HA base's outline. That would work with any type of hair, but you would have to layer everything else on your HA over the top of that so it would somewhat limit your background options.

It's not otherwise possible to do with hair because there's not a way to make parts of the HA base transparent with an item. You can only hide them, outside of the ability to turn limbs on and off in the wardrobe

Dang. Thanks. Oof sucks it can only work with older backgrounds. :T